86724474 has 24 divisors (see below), whose sum is σ = 183062880. Its totient is φ = 27385992.

The previous prime is 86724457. The next prime is 86724479. The reversal of 86724474 is 47442768.

It is a super-2 number, since 2×86724474² = 15042268781153352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86724479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17854 + ... + 22185.

It is an arithmetic number, because the mean of its divisors is an integer number (7627620).

Almost surely, 2^86724474 is an apocalyptic number.

86724474 is an abundant number, since it is smaller than the sum of its proper divisors (96338406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86724474 is a wasteful number, since it uses less digits than its factorization.

86724474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40082 (or 40063 counting only the distinct ones).

The product of its digits is 301056, while the sum is 42.

The square root of 86724474 is about 9312.5975968040. The cubic root of 86724474 is about 442.6365016652.

The spelling of 86724474 in words is "eighty-six million, seven hundred twenty-four thousand, four hundred seventy-four".