138794152 has 64 divisors (see below), whose sum is σ = 304704000. Its totient is φ = 58046976.

The previous prime is 138794147. The next prime is 138794179. The reversal of 138794152 is 251497831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605974 + ... + 606202.

It is an arithmetic number, because the mean of its divisors is an integer number (4761000).

Almost surely, 2^138794152 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 138794152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152352000).

138794152 is an abundant number, since it is smaller than the sum of its proper divisors (165909848).

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

138794152 is a wasteful number, since it uses less digits than its factorization.

138794152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 454 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 138794152 is about 11781.0929883437. The cubic root of 138794152 is about 517.7543097271.

The spelling of 138794152 in words is "one hundred thirty-eight million, seven hundred ninety-four thousand, one hundred fifty-two".