87902244 has 18 divisors (see below), whose sum is σ = 222197430. Its totient is φ = 29300736.

The previous prime is 87902207. The next prime is 87902263. The reversal of 87902244 is 44220978.

It can be written as a sum of positive squares in only one way, i.e., 56430144 + 31472100 = 7512^2 + 5610^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2441729 = 87902244 / (8 + 7 + 9 + 0 + 2 + 2 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 87902199 and 87902208.

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 5 ways as a sum of consecutive naturals, for example, 1220829 + ... + 1220900.

Almost surely, 2^87902244 is an apocalyptic number.

It is an amenable number.

87902244 is an abundant number, since it is smaller than the sum of its proper divisors (134295186).

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

87902244 is a wasteful number, since it uses less digits than its factorization.

87902244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441739 (or 2441734 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 87902244 is about 9375.6196595212. The cubic root of 87902244 is about 444.6312545148.

The spelling of 87902244 in words is "eighty-seven million, nine hundred two thousand, two hundred forty-four".