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68572937280 = 2635173412891
BaseRepresentation
bin111111110111010000…
…111111110001000000
320112222222002010211210
4333313100333301000
52110414132443110
651300232010120
74645205230641
oct776720776100
9215888063753
1068572937280
11270996a97a1
1211358b30940
13660a8b1b43
14346729b6c8
151bb51c2520
hexff743fc40

68572937280 has 112 divisors (see below), whose sum is σ = 218978097984. Its totient is φ = 18180372480.

The previous prime is 68572937227. The next prime is 68572937327. The reversal of 68572937280 is 8273927586.

It is a self number, because there is not a number n which added to its sum of digits gives 68572937280.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40366 + ... + 372525.

Almost surely, 268572937280 is an apocalyptic number.

68572937280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68572937280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109489048992).

68572937280 is an abundant number, since it is smaller than the sum of its proper divisors (150405160704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68572937280 is a wasteful number, since it uses less digits than its factorization.

68572937280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413084 (or 413074 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 68572937280 in words is "sixty-eight billion, five hundred seventy-two million, nine hundred thirty-seven thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 173 192 240 320 346 480 519 692 865 960 1038 1384 1730 2076 2595 2768 3460 4152 5190 5536 6920 8304 10380 11072 13840 16608 20760 27680 33216 41520 55360 83040 166080 412891 825782 1238673 1651564 2064455 2477346 3303128 4128910 4954692 6193365 6606256 8257820 9909384 12386730 13212512 16515640 19818768 24773460 26425024 33031280 39637536 49546920 66062560 71430143 79275072 99093840 132125120 142860286 198187680 214290429 285720572 357150715 396375360 428580858 571441144 714301430 857161716 1071452145 1142882288 1428602860 1714323432 2142904290 2285764576 2857205720 3428646864 4285808580 4571529152 5714411440 6857293728 8571617160 11428822880 13714587456 17143234320 22857645760 34286468640 68572937280