87023490 has 64 divisors (see below), whose sum is σ = 225504000. Its totient is φ = 21426944.

The previous prime is 87023483. The next prime is 87023501. The reversal of 87023490 is 9432078.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17836 + ... + 22184.

It is an arithmetic number, because the mean of its divisors is an integer number (3523500).

Almost surely, 2^87023490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87023490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112752000).

87023490 is an abundant number, since it is smaller than the sum of its proper divisors (138480510).

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

87023490 is a wasteful number, since it uses less digits than its factorization.

87023490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 87023490 is about 9328.6381642767. The cubic root of 87023490 is about 443.1446380093.

The spelling of 87023490 in words is "eighty-seven million, twenty-three thousand, four hundred ninety".