72930131 has 8 divisors (see below), whose sum is σ = 74010624. Its totient is φ = 71857800.

The previous prime is 72930127. The next prime is 72930161. The reversal of 72930131 is 13103927.

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 72930131 - 2² = 72930127 is a prime.

It is a super-2 number, since 2×72930131² = 10637608015354322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72930131.

It is not an unprimeable number, because it can be changed into a prime (72930161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17276 + ... + 21078.

It is an arithmetic number, because the mean of its divisors is an integer number (9251328).

Almost surely, 2^72930131 is an apocalyptic number.

72930131 is a deficient number, since it is larger than the sum of its proper divisors (1080493).

72930131 is a wasteful number, since it uses less digits than its factorization.

72930131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 72930131 is about 8539.9139925411. The cubic root of 72930131 is about 417.8005408890.

The spelling of 72930131 in words is "seventy-two million, nine hundred thirty thousand, one hundred thirty-one".