71672458 has 32 divisors (see below), whose sum is σ = 127334592. Its totient is φ = 29827200.

The previous prime is 71672453. The next prime is 71672467. The reversal of 71672458 is 85427617.

It is a self number, because there is not a number n which added to its sum of digits gives 71672458.

It is not an unprimeable number, because it can be changed into a prime (71672453) 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, 36510 + ... + 38422.

It is an arithmetic number, because the mean of its divisors is an integer number (3979206).

Almost surely, 2^71672458 is an apocalyptic number.

71672458 is a deficient number, since it is larger than the sum of its proper divisors (55662134).

71672458 is a wasteful number, since it uses less digits than its factorization.

71672458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070.

The product of its digits is 94080, while the sum is 40.

The square root of 71672458 is about 8465.9587761812. The cubic root of 71672458 is about 415.3849585186.

The spelling of 71672458 in words is "seventy-one million, six hundred seventy-two thousand, four hundred fifty-eight".