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68562528 = 2531574549
BaseRepresentation
bin1000001011000…
…10111001100000
311210000100002220
410011202321200
5120023000103
610445311040
71461525516
oct405427140
9153010086
1068562528
113577a051
121ab65480
1311287458
14916a4b6
156044c53
hex4162e60

68562528 has 48 divisors (see below), whose sum is σ = 181162800. Its totient is φ = 22703616.

The previous prime is 68562523. The next prime is 68562539. The reversal of 68562528 is 82526586.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 68562528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68562521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12798 + ... + 17346.

It is an arithmetic number, because the mean of its divisors is an integer number (3774225).

Almost surely, 268562528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68562528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90581400).

68562528 is an abundant number, since it is smaller than the sum of its proper divisors (112600272).

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

68562528 is a wasteful number, since it uses less digits than its factorization.

68562528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719 (or 4711 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 68562528 is about 8280.2492716101. The cubic root of 68562528 is about 409.2879331804.

The spelling of 68562528 in words is "sixty-eight million, five hundred sixty-two thousand, five hundred twenty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 157 314 471 628 942 1256 1884 2512 3768 4549 5024 7536 9098 13647 15072 18196 27294 36392 54588 72784 109176 145568 218352 436704 714193 1428386 2142579 2856772 4285158 5713544 8570316 11427088 17140632 22854176 34281264 68562528