72917895 has 16 divisors (see below), whose sum is σ = 119382912. Its totient is φ = 37984800.

The previous prime is 72917893. The next prime is 72917927. The reversal of 72917895 is 59871927.

It is not a de Polignac number, because 72917895 - 2¹ = 72917893 is a prime.

It is a super-2 number, since 2×72917895² = 10634038822462050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72917893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55881 + ... + 57170.

It is an arithmetic number, because the mean of its divisors is an integer number (7461432).

Almost surely, 2^72917895 is an apocalyptic number.

72917895 is a deficient number, since it is larger than the sum of its proper divisors (46465017).

72917895 is a wasteful number, since it uses less digits than its factorization.

72917895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113102.

The product of its digits is 317520, while the sum is 48.

The square root of 72917895 is about 8539.1975618321. The cubic root of 72917895 is about 417.7771738057. Note that the first 3 decimals are identical.

The spelling of 72917895 in words is "seventy-two million, nine hundred seventeen thousand, eight hundred ninety-five".