138471762 has 64 divisors (see below), whose sum is σ = 327398400. Its totient is φ = 38491200.

The previous prime is 138471737. The next prime is 138471779. The reversal of 138471762 is 267174831.

138471762 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 138471762.

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, 170337 + ... + 171147.

It is an arithmetic number, because the mean of its divisors is an integer number (5115600).

Almost surely, 2^138471762 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138471762, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163699200).

138471762 is an abundant number, since it is smaller than the sum of its proper divisors (188926638).

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

138471762 is a wasteful number, since it uses less digits than its factorization.

138471762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039.

The product of its digits is 56448, while the sum is 39.

The square root of 138471762 is about 11767.4025171233. The cubic root of 138471762 is about 517.3531203499.

The spelling of 138471762 in words is "one hundred thirty-eight million, four hundred seventy-one thousand, seven hundred sixty-two".