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72069560 = 23510117839
BaseRepresentation
bin1000100101110…
…11000110111000
312000121111211222
410102323012320
5121422211220
611052411212
71533403223
oct422730670
9160544758
1072069560
1137754a22
1220176b08
1311c14814
1498005ba
1564d8e25
hex44bb1b8

72069560 has 32 divisors (see below), whose sum is σ = 163771200. Its totient is φ = 28540800.

The previous prime is 72069533. The next prime is 72069581. The reversal of 72069560 is 6596027.

It is a self number, because there is not a number n which added to its sum of digits gives 72069560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4880 + ... + 12959.

It is an arithmetic number, because the mean of its divisors is an integer number (5117850).

Almost surely, 272069560 is an apocalyptic number.

It is an amenable number.

72069560 is an abundant number, since it is smaller than the sum of its proper divisors (91701640).

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

72069560 is a wasteful number, since it uses less digits than its factorization.

72069560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17951 (or 17947 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 72069560 is about 8489.3792470357. The cubic root of 72069560 is about 416.1506942955.

The spelling of 72069560 in words is "seventy-two million, sixty-nine thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 101 202 404 505 808 1010 2020 4040 17839 35678 71356 89195 142712 178390 356780 713560 1801739 3603478 7206956 9008695 14413912 18017390 36034780 72069560