138874152 has 32 divisors (see below), whose sum is σ = 347493600. Its totient is φ = 46250304.

The previous prime is 138874147. The next prime is 138874171. The reversal of 138874152 is 251478831.

It is a self number, because there is not a number n which added to its sum of digits gives 138874152.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38323 + ... + 41789.

It is an arithmetic number, because the mean of its divisors is an integer number (10859175).

Almost surely, 2^138874152 is an apocalyptic number.

138874152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138874152 is an abundant number, since it is smaller than the sum of its proper divisors (208619448).

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

138874152 is a wasteful number, since it uses less digits than its factorization.

138874152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145 (or 5141 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 138874152 is about 11784.4877699457. The cubic root of 138874152 is about 517.8537673017.

It can be divided in two parts, 1 and 38874152, that added together give a triangular number (38874153 = T₈₈₁₇).

The spelling of 138874152 in words is "one hundred thirty-eight million, eight hundred seventy-four thousand, one hundred fifty-two".