87369138 has 32 divisors (see below), whose sum is σ = 195981120. Its totient is φ = 28848960.

The previous prime is 87369131. The next prime is 87369167. The reversal of 87369138 is 83196378.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87369093 and 87369102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87369131) 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 15 ways as a sum of consecutive naturals, for example, 1783 + ... + 13338.

It is an arithmetic number, because the mean of its divisors is an integer number (6124410).

Almost surely, 2^87369138 is an apocalyptic number.

87369138 is an abundant number, since it is smaller than the sum of its proper divisors (108611982).

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

87369138 is a wasteful number, since it uses less digits than its factorization.

87369138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15239 (or 15233 counting only the distinct ones).

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

The square root of 87369138 is about 9347.1459815283. The cubic root of 87369138 is about 443.7305706497.

The spelling of 87369138 in words is "eighty-seven million, three hundred sixty-nine thousand, one hundred thirty-eight".