87253136 has 20 divisors (see below), whose sum is σ = 169392432. Its totient is φ = 43538976.

The previous prime is 87253123. The next prime is 87253147. The reversal of 87253136 is 63135278.

It is a super-2 number, since 2×87253136² = 15226219483668992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87253096 and 87253105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3155 + ... + 13581.

Almost surely, 2^87253136 is an apocalyptic number.

It is an amenable number.

87253136 is a deficient number, since it is larger than the sum of its proper divisors (82139296).

87253136 is a wasteful number, since it uses less digits than its factorization.

87253136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10958 (or 10952 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 87253136 is about 9340.9387108577. The cubic root of 87253136 is about 443.5340999334.

The spelling of 87253136 in words is "eighty-seven million, two hundred fifty-three thousand, one hundred thirty-six".