138604092 has 24 divisors (see below), whose sum is σ = 352810752. Its totient is φ = 42001200.

The previous prime is 138604091. The next prime is 138604127. The reversal of 138604092 is 290406831.

138604092 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138604092² = 38422188638288928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

138604092 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138604091) by changing a digit.

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, 524884 + ... + 525147.

It is an arithmetic number, because the mean of its divisors is an integer number (14700448).

Almost surely, 2^138604092 is an apocalyptic number.

138604092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138604092 is an abundant number, since it is smaller than the sum of its proper divisors (214206660).

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

138604092 is a wasteful number, since it uses less digits than its factorization.

138604092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050049 (or 1050047 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 138604092 is about 11773.0239106187. The cubic root of 138604092 is about 517.5178700450.

The spelling of 138604092 in words is "one hundred thirty-eight million, six hundred four thousand, ninety-two".