86257044 has 18 divisors (see below), whose sum is σ = 218038730. Its totient is φ = 28752336.

The previous prime is 86257037. The next prime is 86257051. The reversal of 86257044 is 44075268.

86257044 is a `hidden beast` number, since 86 + 2 + 570 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (86257037) and next prime (86257051).

It can be written as a sum of positive squares in only one way, i.e., 49533444 + 36723600 = 7038^2 + 6060^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2396029 = 86257044 / (8 + 6 + 2 + 5 + 7 + 0 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1197979 + ... + 1198050.

Almost surely, 2^86257044 is an apocalyptic number.

It is an amenable number.

86257044 is an abundant number, since it is smaller than the sum of its proper divisors (131781686).

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

86257044 is a wasteful number, since it uses less digits than its factorization.

86257044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396039 (or 2396034 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 86257044 is about 9287.4670389725. The cubic root of 86257044 is about 441.8398237541.

The spelling of 86257044 in words is "eighty-six million, two hundred fifty-seven thousand, forty-four".