138772062 has 64 divisors (see below), whose sum is σ = 362315520. Its totient is φ = 38815200.

The previous prime is 138772061. The next prime is 138772069. The reversal of 138772062 is 260277831.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138772061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1264 + ... + 16707.

It is an arithmetic number, because the mean of its divisors is an integer number (5661180).

Almost surely, 2^138772062 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138772062, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181157760).

138772062 is an abundant number, since it is smaller than the sum of its proper divisors (223543458).

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

138772062 is a wasteful number, since it uses less digits than its factorization.

138772062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18006 (or 18000 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 138772062 is about 11780.1554319118. The cubic root of 138772062 is about 517.7268402712.

The spelling of 138772062 in words is "one hundred thirty-eight million, seven hundred seventy-two thousand, sixty-two".