87023898 has 24 divisors (see below), whose sum is σ = 203056308. Its totient is φ = 26776512.

The previous prime is 87023891. The next prime is 87023939. The reversal of 87023898 is 89832078.

It can be written as a sum of positive squares in 2 ways, for example, as 70107129 + 16916769 = 8373^2 + 4113^2 .

It is a super-2 number, since 2×87023898² = 15146317646228808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87023891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185715 + ... + 186182.

Almost surely, 2^87023898 is an apocalyptic number.

87023898 is an abundant number, since it is smaller than the sum of its proper divisors (116032410).

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

87023898 is a wasteful number, since it uses less digits than its factorization.

87023898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371918 (or 371915 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 87023898 is about 9328.6600323948. The cubic root of 87023898 is about 443.1453305531.

The spelling of 87023898 in words is "eighty-seven million, twenty-three thousand, eight hundred ninety-eight".