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72136104 = 2333005671
BaseRepresentation
bin1000100110010…
…11010110101000
312000201220010120
410103023112220
5121431323404
611054043240
71534101225
oct423132650
9160656116
1072136104
113779aa17
12201a9520
1311c38bb1
14981a94c
1564ed9d9
hex44cb5a8

72136104 has 16 divisors (see below), whose sum is σ = 180340320. Its totient is φ = 24045360.

The previous prime is 72136093. The next prime is 72136111. The reversal of 72136104 is 40163127.

It is a super-3 number, since 3×721361043 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 3005671 = 72136104 / (7 + 2 + 1 + 3 + 6 + 1 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502812 + ... + 1502859.

It is an arithmetic number, because the mean of its divisors is an integer number (11271270).

Almost surely, 272136104 is an apocalyptic number.

It is an amenable number.

72136104 is an abundant number, since it is smaller than the sum of its proper divisors (108204216).

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

72136104 is a wasteful number, since it uses less digits than its factorization.

72136104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005680 (or 3005676 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 72136104 is about 8493.2975928081. The cubic root of 72136104 is about 416.2787363941.

The spelling of 72136104 in words is "seventy-two million, one hundred thirty-six thousand, one hundred four".

Divisors: 1 2 3 4 6 8 12 24 3005671 6011342 9017013 12022684 18034026 24045368 36068052 72136104