9138672 has 30 divisors (see below), whose sum is σ = 25575992. Its totient is φ = 3046176.

The previous prime is 9138637. The next prime is 9138697. The reversal of 9138672 is 2768319.

9138672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31588 + ... + 31875.

Almost surely, 2^9138672 is an apocalyptic number.

It is an amenable number.

9138672 is an abundant number, since it is smaller than the sum of its proper divisors (16437320).

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

9138672 is a wasteful number, since it uses less digits than its factorization.

9138672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63477 (or 63468 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9138672 is about 3023.0236519088. The cubic root of 9138672 is about 209.0712728996.

The spelling of 9138672 in words is "nine million, one hundred thirty-eight thousand, six hundred seventy-two".