138260232 has 48 divisors (see below), whose sum is σ = 408498480. Its totient is φ = 41896800.

The previous prime is 138260209. The next prime is 138260233. The reversal of 138260232 is 232062831.

It is a junction number, because it is equal to n+sod(n) for n = 138260196 and 138260205.

It is not an unprimeable number, because it can be changed into a prime (138260233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86494 + ... + 88077.

It is an arithmetic number, because the mean of its divisors is an integer number (8510385).

Almost surely, 2^138260232 is an apocalyptic number.

138260232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138260232 is an abundant number, since it is smaller than the sum of its proper divisors (270238248).

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

138260232 is a wasteful number, since it uses less digits than its factorization.

138260232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174594 (or 174587 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 138260232 is about 11758.4111171535. The cubic root of 138260232 is about 517.0895492167.

The spelling of 138260232 in words is "one hundred thirty-eight million, two hundred sixty thousand, two hundred thirty-two".