138376340 has 24 divisors (see below), whose sum is σ = 291537792. Its totient is φ = 55170080.

The previous prime is 138376333. The next prime is 138376351. The reversal of 138376340 is 43673831.

It is a happy number.

138376340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138376340² = 38296022943591200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138376340.

It is a congruent number.

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, 4904 + ... + 17343.

It is an arithmetic number, because the mean of its divisors is an integer number (12147408).

Almost surely, 2^138376340 is an apocalyptic number.

138376340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138376340 is an abundant number, since it is smaller than the sum of its proper divisors (153161452).

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

138376340 is a wasteful number, since it uses less digits than its factorization.

138376340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22567 (or 22565 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 138376340 is about 11763.3473127337. The cubic root of 138376340 is about 517.2342556495.

The spelling of 138376340 in words is "one hundred thirty-eight million, three hundred seventy-six thousand, three hundred forty".