72920361 has 8 divisors (see below), whose sum is σ = 102946464. Its totient is φ = 45753920.

The previous prime is 72920333. The next prime is 72920363. The reversal of 72920361 is 16302927.

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 72920361 - 2⁵ = 72920329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72920363) 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, 714855 + ... + 714956.

It is an arithmetic number, because the mean of its divisors is an integer number (12868308).

Almost surely, 2^72920361 is an apocalyptic number.

It is an amenable number.

72920361 is a deficient number, since it is larger than the sum of its proper divisors (30026103).

72920361 is a wasteful number, since it uses less digits than its factorization.

72920361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429831.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 72920361 is about 8539.3419535700. The cubic root of 72920361 is about 417.7818833350.

The spelling of 72920361 in words is "seventy-two million, nine hundred twenty thousand, three hundred sixty-one".