138687300 has 54 divisors (see below), whose sum is σ = 434710458. Its totient is φ = 36983040.

The previous prime is 138687299. The next prime is 138687313. The reversal of 138687300 is 3786831.

It can be written as a sum of positive squares in 3 ways, for example, as 1937664 + 136749636 = 1392^2 + 11694^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 76149 + ... + 77948.

Almost surely, 2^138687300 is an apocalyptic number.

138687300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138687300 is an abundant number, since it is smaller than the sum of its proper divisors (296023158).

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

138687300 is a wasteful number, since it uses less digits than its factorization.

138687300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154117 (or 154107 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 138687300 is about 11776.5572218709. The cubic root of 138687300 is about 517.6214095874.

The spelling of 138687300 in words is "one hundred thirty-eight million, six hundred eighty-seven thousand, three hundred".