138871152 has 160 divisors (see below), whose sum is σ = 479731200. Its totient is φ = 37573632.

The previous prime is 138871151. The next prime is 138871153. The reversal of 138871152 is 251178831.

It is an interprime number because it is at equal distance from previous prime (138871151) and next prime (138871153).

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138871151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56248 + ... + 58664.

It is an arithmetic number, because the mean of its divisors is an integer number (2998320).

Almost surely, 2^138871152 is an apocalyptic number.

138871152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138871152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239865600).

138871152 is an abundant number, since it is smaller than the sum of its proper divisors (340860048).

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

138871152 is a wasteful number, since it uses less digits than its factorization.

138871152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460 (or 2448 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 138871152 is about 11784.3604832846. The cubic root of 138871152 is about 517.8500383321.

The spelling of 138871152 in words is "one hundred thirty-eight million, eight hundred seventy-one thousand, one hundred fifty-two".