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70652660 = 22513439619
BaseRepresentation
bin1000011011000…
…01001011110100
311220221112020012
410031201023310
5121041341120
611002155352
71515352301
oct415411364
9156845205
1070652660
1136977431
121b7b2b58
1311839910
1495520a8
1563091c5
hex43612f4

70652660 has 48 divisors (see below), whose sum is σ = 160406400. Its totient is φ = 25985664.

The previous prime is 70652653. The next prime is 70652707. The reversal of 70652660 is 6625607.

It is a congruent number.

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, 113831 + ... + 114449.

It is an arithmetic number, because the mean of its divisors is an integer number (3341800).

Almost surely, 270652660 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 70652660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80203200).

70652660 is an abundant number, since it is smaller than the sum of its proper divisors (89753740).

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

70652660 is a wasteful number, since it uses less digits than its factorization.

70652660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 70652660 is about 8405.5136666357. The cubic root of 70652660 is about 413.4054259151.

The spelling of 70652660 in words is "seventy million, six hundred fifty-two thousand, six hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 439 619 878 1238 1756 2195 2476 3095 4390 5707 6190 8047 8780 11414 12380 16094 22828 28535 32188 40235 57070 80470 114140 160940 271741 543482 1086964 1358705 2717410 3532633 5434820 7065266 14130532 17663165 35326330 70652660