138402822 has 64 divisors (see below), whose sum is σ = 298598400. Its totient is φ = 42666624.

The previous prime is 138402793. The next prime is 138402833. The reversal of 138402822 is 228204831.

138402822 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 2×138402822² = 38310682275127368, 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 138402822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 928804 + ... + 928952.

It is an arithmetic number, because the mean of its divisors is an integer number (4665600).

Almost surely, 2^138402822 is an apocalyptic number.

138402822 is an abundant number, since it is smaller than the sum of its proper divisors (160195578).

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

138402822 is a wasteful number, since it uses less digits than its factorization.

138402822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 138402822 is about 11764.4728738690. The cubic root of 138402822 is about 517.2672490641.

The spelling of 138402822 in words is "one hundred thirty-eight million, four hundred two thousand, eight hundred twenty-two".