86724444 has 24 divisors (see below), whose sum is σ = 211155840. Its totient is φ = 27651184.

The previous prime is 86724439. The next prime is 86724457. The reversal of 86724444 is 44442768.

It is a super-2 number, since 2×86724444² = 15042258374218272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156834 + ... + 157385.

It is an arithmetic number, because the mean of its divisors is an integer number (8798160).

Almost surely, 2^86724444 is an apocalyptic number.

It is an amenable number.

86724444 is an abundant number, since it is smaller than the sum of its proper divisors (124431396).

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

86724444 is a wasteful number, since it uses less digits than its factorization.

86724444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314249 (or 314247 counting only the distinct ones).

The product of its digits is 172032, while the sum is 39.

The square root of 86724444 is about 9312.5959860825. The cubic root of 86724444 is about 442.6364506258.

The spelling of 86724444 in words is "eighty-six million, seven hundred twenty-four thousand, four hundred forty-four".