87090800 has 30 divisors (see below), whose sum is σ = 209236608. Its totient is φ = 34836160.

The previous prime is 87090797. The next prime is 87090803. The reversal of 87090800 is 809078.

It is an interprime number because it is at equal distance from previous prime (87090797) and next prime (87090803).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87090803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108464 + ... + 109263.

Almost surely, 2^87090800 is an apocalyptic number.

87090800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87090800 is an abundant number, since it is smaller than the sum of its proper divisors (122145808).

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

87090800 is a wasteful number, since it uses less digits than its factorization.

87090800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217745 (or 217734 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 87090800 is about 9332.2451746619. The cubic root of 87090800 is about 443.2588614928.

Adding to 87090800 its reverse (809078), we get a palindrome (87899878).

The spelling of 87090800 in words is "eighty-seven million, ninety thousand, eight hundred".