72910265 has 8 divisors (see below), whose sum is σ = 87554760. Its totient is φ = 58286592.

The previous prime is 72910261. The next prime is 72910289. The reversal of 72910265 is 56201927.

It can be written as a sum of positive squares in 4 ways, for example, as 5456896 + 67453369 = 2336^2 + 8213^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 72910265 - 2² = 72910261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72910261) 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, 3977 + ... + 12713.

It is an arithmetic number, because the mean of its divisors is an integer number (10944345).

Almost surely, 2^72910265 is an apocalyptic number.

It is an amenable number.

72910265 is a deficient number, since it is larger than the sum of its proper divisors (14644495).

72910265 is a wasteful number, since it uses less digits than its factorization.

72910265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 72910265 is about 8538.7507868540. The cubic root of 72910265 is about 417.7626014750.

The spelling of 72910265 in words is "seventy-two million, nine hundred ten thousand, two hundred sixty-five".