138234488 has 32 divisors (see below), whose sum is σ = 302268000. Its totient is φ = 59242176.

The previous prime is 138234469. The next prime is 138234491. The reversal of 138234488 is 884432831.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22445 + ... + 27932.

It is an arithmetic number, because the mean of its divisors is an integer number (9445875).

Almost surely, 2^138234488 is an apocalyptic number.

It is an amenable number.

138234488 is an abundant number, since it is smaller than the sum of its proper divisors (164033512).

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

138234488 is an equidigital number, since it uses as much as digits as its factorization.

138234488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50404 (or 50386 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 138234488 is about 11757.3163604625. The cubic root of 138234488 is about 517.0574532686.

The spelling of 138234488 in words is "one hundred thirty-eight million, two hundred thirty-four thousand, four hundred eighty-eight".