87805458 has 80 divisors (see below), whose sum is σ = 213992856. Its totient is φ = 26749440.

The previous prime is 87805439. The next prime is 87805483. The reversal of 87805458 is 85450878.

It can be written as a sum of positive squares in 4 ways, for example, as 83777409 + 4028049 = 9153^2 + 2007^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 364218 + ... + 364458.

Almost surely, 2^87805458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87805458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106996428).

87805458 is an abundant number, since it is smaller than the sum of its proper divisors (126187398).

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

87805458 is a wasteful number, since it uses less digits than its factorization.

87805458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 87805458 is about 9370.4566590962. The cubic root of 87805458 is about 444.4680054223.

The spelling of 87805458 in words is "eighty-seven million, eight hundred five thousand, four hundred fifty-eight".