87391368 has 48 divisors (see below), whose sum is σ = 237772080. Its totient is φ = 28996704.

The previous prime is 87391363. The next prime is 87391391. The reversal of 87391368 is 86319378.

It is a happy number.

It is a super-2 number, since 2×87391368² = 15274502401822848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87391363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13671 + ... + 19017.

It is an arithmetic number, because the mean of its divisors is an integer number (4953585).

Almost surely, 2^87391368 is an apocalyptic number.

It is an amenable number.

87391368 is an abundant number, since it is smaller than the sum of its proper divisors (150380712).

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

87391368 is a wasteful number, since it uses less digits than its factorization.

87391368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586 (or 5579 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 87391368 is about 9348.3350389254. The cubic root of 87391368 is about 443.7682013826.

The spelling of 87391368 in words is "eighty-seven million, three hundred ninety-one thousand, three hundred sixty-eight".