138304092 has 24 divisors (see below), whose sum is σ = 324125200. Its totient is φ = 45899136.

The previous prime is 138304087. The next prime is 138304093. The reversal of 138304092 is 290403831.

138304092 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138304093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22417 + ... + 27912.

Almost surely, 2^138304092 is an apocalyptic number.

138304092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138304092 is an abundant number, since it is smaller than the sum of its proper divisors (185821108).

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

138304092 is a wasteful number, since it uses less digits than its factorization.

138304092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50565 (or 50563 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 138304092 is about 11760.2760171690. The cubic root of 138304092 is about 517.1442218426.

The spelling of 138304092 in words is "one hundred thirty-eight million, three hundred four thousand, ninety-two".