138767574 has 64 divisors (see below), whose sum is σ = 310003200. Its totient is φ = 41061120.

The previous prime is 138767569. The next prime is 138767591. The reversal of 138767574 is 475767831.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 931252 + ... + 931400.

It is an arithmetic number, because the mean of its divisors is an integer number (4843800).

Almost surely, 2^138767574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138767574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155001600).

138767574 is an abundant number, since it is smaller than the sum of its proper divisors (171235626).

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

138767574 is a wasteful number, since it uses less digits than its factorization.

138767574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its digits is 987840, while the sum is 48.

The square root of 138767574 is about 11779.9649405251. The cubic root of 138767574 is about 517.7212589770.

The spelling of 138767574 in words is "one hundred thirty-eight million, seven hundred sixty-seven thousand, five hundred seventy-four".