9204138 has 16 divisors (see below), whose sum is σ = 20453760. Its totient is φ = 3068028.

The previous prime is 9204137. The next prime is 9204203. The reversal of 9204138 is 8314029.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9204133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 85170 + ... + 85277.

It is an arithmetic number, because the mean of its divisors is an integer number (1278360).

Almost surely, 2^9204138 is an apocalyptic number.

9204138 is an abundant number, since it is smaller than the sum of its proper divisors (11249622).

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

9204138 is a wasteful number, since it uses less digits than its factorization.

9204138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170458 (or 170452 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 9204138 is about 3033.8322300351. The cubic root of 9204138 is about 209.5693214281.

The spelling of 9204138 in words is "nine million, two hundred four thousand, one hundred thirty-eight".