138797230 has 96 divisors (see below), whose sum is σ = 306288864. Its totient is φ = 44640000.

The previous prime is 138797213. The next prime is 138797273. The reversal of 138797230 is 32797831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1374180 + ... + 1374280.

It is an arithmetic number, because the mean of its divisors is an integer number (3190509).

Almost surely, 2^138797230 is an apocalyptic number.

138797230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138797230 is an abundant number, since it is smaller than the sum of its proper divisors (167491634).

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

138797230 is a wasteful number, since it uses less digits than its factorization.

138797230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 138797230 is about 11781.2236206601. The cubic root of 138797230 is about 517.7581370641.

The spelling of 138797230 in words is "one hundred thirty-eight million, seven hundred ninety-seven thousand, two hundred thirty".