138233277 has 64 divisors (see below), whose sum is σ = 254607360. Its totient is φ = 72176832.

The previous prime is 138233267. The next prime is 138233299. The reversal of 138233277 is 772332831.

138233277 is a `hidden beast` number, since 1 + 382 + 3 + 3 + 277 = 666.

It is not a de Polignac number, because 138233277 - 2¹¹ = 138231229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138233257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 311818 + ... + 312260.

It is an arithmetic number, because the mean of its divisors is an integer number (3978240).

Almost surely, 2^138233277 is an apocalyptic number.

It is an amenable number.

138233277 is a deficient number, since it is larger than the sum of its proper divisors (116374083).

138233277 is a wasteful number, since it uses less digits than its factorization.

138233277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 593 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 138233277 is about 11757.2648605022. The cubic root of 138233277 is about 517.0559433743.

The spelling of 138233277 in words is "one hundred thirty-eight million, two hundred thirty-three thousand, two hundred seventy-seven".