138896368 has 60 divisors (see below), whose sum is σ = 300986688. Its totient is φ = 62000640.

The previous prime is 138896363. The next prime is 138896369. The reversal of 138896368 is 863698831.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138896363) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 82996 + ... + 84652.

Almost surely, 2^138896368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138896368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150493344).

138896368 is an abundant number, since it is smaller than the sum of its proper divisors (162090320).

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

138896368 is a wasteful number, since it uses less digits than its factorization.

138896368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1703 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 138896368 is about 11785.4303273152. The cubic root of 138896368 is about 517.8813798937.

The spelling of 138896368 in words is "one hundred thirty-eight million, eight hundred ninety-six thousand, three hundred sixty-eight".