138374496 has 108 divisors (see below), whose sum is σ = 426250188. Its totient is φ = 42561792.

The previous prime is 138374491. The next prime is 138374507. The reversal of 138374496 is 694473831.

138374496 is a `hidden beast` number, since 13 + 83 + 74 + 496 = 666.

138374496 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 2×138374496² = 38295002286508032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138374491) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47251 + ... + 50093.

It is an arithmetic number, because the mean of its divisors is an integer number (3946761).

Almost surely, 2^138374496 is an apocalyptic number.

138374496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138374496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213125094).

138374496 is an abundant number, since it is smaller than the sum of its proper divisors (287875692).

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

138374496 is a wasteful number, since it uses less digits than its factorization.

138374496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885 (or 2861 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 138374496 is about 11763.2689334215. The cubic root of 138374496 is about 517.2319580886.

The spelling of 138374496 in words is "one hundred thirty-eight million, three hundred seventy-four thousand, four hundred ninety-six".