87884920 has 32 divisors (see below), whose sum is σ = 198166320. Its totient is φ = 35078400.

The previous prime is 87884911. The next prime is 87884921. The reversal of 87884920 is 2948878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87884921) 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, 18820 + ... + 23020.

Almost surely, 2^87884920 is an apocalyptic number.

It is an amenable number.

87884920 is an abundant number, since it is smaller than the sum of its proper divisors (110281400).

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

87884920 is a wasteful number, since it uses less digits than its factorization.

87884920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4731 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 87884920 is about 9374.6957283957. The cubic root of 87884920 is about 444.6020429058.

It can be divided in two parts, 87884 and 920, that added together give a square (88804 = 298²).

The spelling of 87884920 in words is "eighty-seven million, eight hundred eighty-four thousand, nine hundred twenty".