87399378 has 32 divisors (see below), whose sum is σ = 211878720. Its totient is φ = 26484480.

The previous prime is 87399307. The next prime is 87399383.

87399378 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72975 + ... + 74162.

It is an arithmetic number, because the mean of its divisors is an integer number (6621210).

Almost surely, 2^87399378 is an apocalyptic number.

87399378 is an abundant number, since it is smaller than the sum of its proper divisors (124479342).

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

87399378 is a wasteful number, since it uses less digits than its factorization.

87399378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147159 (or 147153 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 87399378 is about 9348.7634476438. The cubic root of 87399378 is about 443.7817590706.

The spelling of 87399378 in words is "eighty-seven million, three hundred ninety-nine thousand, three hundred seventy-eight".