138667048 has 32 divisors (see below), whose sum is σ = 280584360. Its totient is φ = 63866880.

The previous prime is 138667033. The next prime is 138667093. The reversal of 138667048 is 840766831.

138667048 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 63011844 + 75655204 = 7938^2 + 8698^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138666995 and 138667013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63088 + ... + 65248.

Almost surely, 2^138667048 is an apocalyptic number.

It is an amenable number.

138667048 is an abundant number, since it is smaller than the sum of its proper divisors (141917312).

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

138667048 is a wasteful number, since it uses less digits than its factorization.

138667048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797 (or 2793 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 138667048 is about 11775.6973466543. The cubic root of 138667048 is about 517.5962129061.

The spelling of 138667048 in words is "one hundred thirty-eight million, six hundred sixty-seven thousand, forty-eight".