138250884 has 24 divisors (see below), whose sum is σ = 336611520. Its totient is φ = 44079904.

The previous prime is 138250781. The next prime is 138250933. The reversal of 138250884 is 488052831.

It is a super-2 number, since 2×138250884² = 38226613853562912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250179 + ... + 250730.

It is an arithmetic number, because the mean of its divisors is an integer number (14025480).

Almost surely, 2^138250884 is an apocalyptic number.

It is an amenable number.

138250884 is an abundant number, since it is smaller than the sum of its proper divisors (198360636).

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

138250884 is a wasteful number, since it uses less digits than its factorization.

138250884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500939 (or 500937 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 138250884 is about 11758.0136077485. The cubic root of 138250884 is about 517.0778951978.

The spelling of 138250884 in words is "one hundred thirty-eight million, two hundred fifty thousand, eight hundred eighty-four".