138472 has 16 divisors (see below), whose sum is σ = 273600. Its totient is φ = 65520.

The previous prime is 138469. The next prime is 138493. The reversal of 138472 is 274831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304 + ... + 607.

It is an arithmetic number, because the mean of its divisors is an integer number (17100).

2¹³⁸⁴⁷² is an apocalyptic number.

138472 is the 304-th pentagonal number.

It is an amenable number.

138472 is a deficient number, since it is larger than the sum of its proper divisors (135128).

138472 is a wasteful number, since it uses less digits than its factorization.

138472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936 (or 932 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 138472 is about 372.1182607720. The cubic root of 138472 is about 51.7353416752.

The spelling of 138472 in words is "one hundred thirty-eight thousand, four hundred seventy-two".