87257944 has 32 divisors (see below), whose sum is σ = 167961600. Its totient is φ = 42478240.

The previous prime is 87257941. The next prime is 87257953. The reversal of 87257944 is 44975278.

It is a super-2 number, since 2×87257944² = 15227897582214272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87257894 and 87257903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87257941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89379 + ... + 90349.

It is an arithmetic number, because the mean of its divisors is an integer number (5248800).

Almost surely, 2^87257944 is an apocalyptic number.

It is an amenable number.

87257944 is a deficient number, since it is larger than the sum of its proper divisors (80703656).

87257944 is a wasteful number, since it uses less digits than its factorization.

87257944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1259 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 87257944 is about 9341.1960690267. The cubic root of 87257944 is about 443.5422466235.

The spelling of 87257944 in words is "eighty-seven million, two hundred fifty-seven thousand, nine hundred forty-four".