87322768 has 20 divisors (see below), whose sum is σ = 182202748. Its totient is φ = 40302720.

The previous prime is 87322759. The next prime is 87322771. The reversal of 87322768 is 86722378.

It can be written as a sum of positive squares in 2 ways, for example, as 24088464 + 63234304 = 4908^2 + 7952^2 .

It is a super-2 number, since 2×87322768² = 15250531622363648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209703 + ... + 210118.

Almost surely, 2^87322768 is an apocalyptic number.

It is an amenable number.

87322768 is an abundant number, since it is smaller than the sum of its proper divisors (94879980).

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

87322768 is a wasteful number, since it uses less digits than its factorization.

87322768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419842 (or 419836 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 87322768 is about 9344.6652160471. The cubic root of 87322768 is about 443.6520554050.

The spelling of 87322768 in words is "eighty-seven million, three hundred twenty-two thousand, seven hundred sixty-eight".