138712260 has 48 divisors (see below), whose sum is σ = 398897856. Its totient is φ = 35989632.

The previous prime is 138712253. The next prime is 138712267. The reversal of 138712260 is 62217831.

It is an interprime number because it is at equal distance from previous prime (138712253) and next prime (138712267).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (138712267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29022 + ... + 33461.

It is an arithmetic number, because the mean of its divisors is an integer number (8310372).

Almost surely, 2^138712260 is an apocalyptic number.

138712260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138712260 is an abundant number, since it is smaller than the sum of its proper divisors (260185596).

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

138712260 is a wasteful number, since it uses less digits than its factorization.

138712260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62532 (or 62530 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 138712260 is about 11777.6169066582. The cubic root of 138712260 is about 517.6524603887.

The spelling of 138712260 in words is "one hundred thirty-eight million, seven hundred twelve thousand, two hundred sixty".