72517630 has 16 divisors (see below), whose sum is σ = 130641840. Its totient is φ = 28982592.

The previous prime is 72517607. The next prime is 72517657. The reversal of 72517630 is 3671527.

It is a junction number, because it is equal to n+sod(n) for n = 72517592 and 72517601.

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, 13837 + ... + 18343.

It is an arithmetic number, because the mean of its divisors is an integer number (8165115).

Almost surely, 2^72517630 is an apocalyptic number.

72517630 is a deficient number, since it is larger than the sum of its proper divisors (58124210).

72517630 is a wasteful number, since it uses less digits than its factorization.

72517630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6123.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 72517630 is about 8515.7283892806. The cubic root of 72517630 is about 417.0113421763.

The spelling of 72517630 in words is "seventy-two million, five hundred seventeen thousand, six hundred thirty".