138145704 has 32 divisors (see below), whose sum is σ = 345876000. Its totient is φ = 45980352.

The previous prime is 138145697. The next prime is 138145741. The reversal of 138145704 is 407541831.

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, 13842 + ... + 21630.

It is an arithmetic number, because the mean of its divisors is an integer number (10808625).

Almost surely, 2^138145704 is an apocalyptic number.

It is an amenable number.

138145704 is an abundant number, since it is smaller than the sum of its proper divisors (207730296).

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

138145704 is a wasteful number, since it uses less digits than its factorization.

138145704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8537 (or 8533 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 138145704 is about 11753.5400624663. The cubic root of 138145704 is about 516.9467325620.

The spelling of 138145704 in words is "one hundred thirty-eight million, one hundred forty-five thousand, seven hundred four".