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72041015 = 534074229
BaseRepresentation
bin1000100101101…
…00001000110111
312000120001200202
410102310020313
5121420303030
611052031115
71533224054
oct422641067
9160501622
1072041015
1137735532
122016249b
1311c04827
1497d402b
1564d0745
hex44b4237

72041015 has 8 divisors (see below), whose sum is σ = 86495040. Its totient is φ = 57602272.

The previous prime is 72041009. The next prime is 72041029. The reversal of 72041015 is 51014027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-72041015 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14921 + ... + 19149.

It is an arithmetic number, because the mean of its divisors is an integer number (10811880).

Almost surely, 272041015 is an apocalyptic number.

72041015 is a deficient number, since it is larger than the sum of its proper divisors (14454025).

72041015 is a wasteful number, since it uses less digits than its factorization.

72041015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 72041015 is about 8487.6978622003. The cubic root of 72041015 is about 416.0957446504.

The spelling of 72041015 in words is "seventy-two million, forty-one thousand, fifteen".

Divisors: 1 5 3407 4229 17035 21145 14408203 72041015