87256190 has 16 divisors (see below), whose sum is σ = 179498592. Its totient is φ = 29916384.

The previous prime is 87256187. The next prime is 87256193. The reversal of 87256190 is 9165278.

It is an interprime number because it is at equal distance from previous prime (87256187) and next prime (87256193).

It is a super-2 number, since 2×87256190² = 15227285386632200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87256193) 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, 623189 + ... + 623328.

It is an arithmetic number, because the mean of its divisors is an integer number (11218662).

Almost surely, 2^87256190 is an apocalyptic number.

87256190 is an abundant number, since it is smaller than the sum of its proper divisors (92242402).

87256190 is a wasteful number, since it uses less digits than its factorization.

87256190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246531.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 87256190 is about 9341.1021833614. The cubic root of 87256190 is about 443.5392746751.

The spelling of 87256190 in words is "eighty-seven million, two hundred fifty-six thousand, one hundred ninety".