87820052 has 12 divisors (see below), whose sum is σ = 161773920. Its totient is φ = 41598936.

The previous prime is 87820043. The next prime is 87820063. The reversal of 87820052 is 25002878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577688 + ... + 577839.

It is an arithmetic number, because the mean of its divisors is an integer number (13481160).

Almost surely, 2^87820052 is an apocalyptic number.

It is an amenable number.

87820052 is a deficient number, since it is larger than the sum of its proper divisors (73953868).

87820052 is a wasteful number, since it uses less digits than its factorization.

87820052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155550 (or 1155548 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 87820052 is about 9371.2353507955. The cubic root of 87820052 is about 444.4926288222.

The spelling of 87820052 in words is "eighty-seven million, eight hundred twenty thousand, fifty-two".