138472574 has 16 divisors (see below), whose sum is σ = 214031808. Its totient is φ = 67141152.

The previous prime is 138472571. The next prime is 138472583. The reversal of 138472574 is 475274831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138472571) 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 7 ways as a sum of consecutive naturals, for example, 20507 + ... + 26409.

It is an arithmetic number, because the mean of its divisors is an integer number (13376988).

Almost surely, 2^138472574 is an apocalyptic number.

138472574 is a deficient number, since it is larger than the sum of its proper divisors (75559234).

138472574 is a wasteful number, since it uses less digits than its factorization.

138472574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259.

The product of its digits is 188160, while the sum is 41.

The square root of 138472574 is about 11767.4370191644. The cubic root of 138472574 is about 517.3541316028.

The spelling of 138472574 in words is "one hundred thirty-eight million, four hundred seventy-two thousand, five hundred seventy-four".