138253376 has 14 divisors (see below), whose sum is σ = 274346670. Its totient is φ = 69126656.

The previous prime is 138253373. The next prime is 138253399. The reversal of 138253376 is 673352831.

It can be written as a sum of positive squares in only one way, i.e., 108659776 + 29593600 = 10424^2 + 5440^2 .

It is a super-2 number, since 2×138253376² = 38227991950794752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138253373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080041 + ... + 1080168.

Almost surely, 2^138253376 is an apocalyptic number.

138253376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138253376 is a deficient number, since it is larger than the sum of its proper divisors (136093294).

138253376 is an equidigital number, since it uses as much as digits as its factorization.

138253376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160221 (or 2160211 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 138253376 is about 11758.1195775515. The cubic root of 138253376 is about 517.0810019902.

The spelling of 138253376 in words is "one hundred thirty-eight million, two hundred fifty-three thousand, three hundred seventy-six".