87287054920 has 32 divisors (see below), whose sum is σ = 211503249720. Its totient is φ = 32229066240.

The previous prime is 87287054893. The next prime is 87287054993. The reversal of 87287054920 is 2945078278.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 70402131556 + 16884923364 = 265334^2 + 129942^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83929341 + ... + 83930380.

Almost surely, 2^87287054920 is an apocalyptic number.

It is an amenable number.

87287054920 is an abundant number, since it is smaller than the sum of its proper divisors (124216194800).

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

87287054920 is a wasteful number, since it uses less digits than its factorization.

87287054920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167859745 (or 167859741 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 87287054920 in words is "eighty-seven billion, two hundred eighty-seven million, fifty-four thousand, nine hundred twenty".