138469230 has 32 divisors (see below), whose sum is σ = 369252000. Its totient is φ = 36925056.

The previous prime is 138469217. The next prime is 138469271. The reversal of 138469230 is 32964831.

138469230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256155 + ... + 256694.

It is an arithmetic number, because the mean of its divisors is an integer number (11539125).

Almost surely, 2^138469230 is an apocalyptic number.

138469230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138469230 is an abundant number, since it is smaller than the sum of its proper divisors (230782770).

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

138469230 is a wasteful number, since it uses less digits than its factorization.

138469230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512865 (or 512859 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 138469230 is about 11767.2949312916. The cubic root of 138469230 is about 517.3499670088.

The spelling of 138469230 in words is "one hundred thirty-eight million, four hundred sixty-nine thousand, two hundred thirty".