138775022 has 4 divisors (see below), whose sum is σ = 208162536. Its totient is φ = 69387510.

The previous prime is 138775009. The next prime is 138775057. The reversal of 138775022 is 220577831.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×138775022² = 38517013462200968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34693754 + ... + 34693757.

It is an arithmetic number, because the mean of its divisors is an integer number (52040634).

Almost surely, 2^138775022 is an apocalyptic number.

138775022 is a deficient number, since it is larger than the sum of its proper divisors (69387514).

138775022 is an equidigital number, since it uses as much as digits as its factorization.

138775022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69387513.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 138775022 is about 11780.2810662564. The cubic root of 138775022 is about 517.7305212728.

The spelling of 138775022 in words is "one hundred thirty-eight million, seven hundred seventy-five thousand, twenty-two".