138267774 has 12 divisors (see below), whose sum is σ = 299580216. Its totient is φ = 46089252.

The previous prime is 138267763. The next prime is 138267793. The reversal of 138267774 is 477762831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3840754 + ... + 3840789.

It is an arithmetic number, because the mean of its divisors is an integer number (24965018).

Almost surely, 2^138267774 is an apocalyptic number.

138267774 is an abundant number, since it is smaller than the sum of its proper divisors (161312442).

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

138267774 is a wasteful number, since it uses less digits than its factorization.

138267774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681551 (or 7681548 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 138267774 is about 11758.7318193758. The cubic root of 138267774 is about 517.0989513381.

The spelling of 138267774 in words is "one hundred thirty-eight million, two hundred sixty-seven thousand, seven hundred seventy-four".