28338172 has 12 divisors (see below), whose sum is σ = 50432760. Its totient is φ = 13928816.

The previous prime is 28338143. The next prime is 28338173. The reversal of 28338172 is 27183382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59803 + ... + 60274.

It is an arithmetic number, because the mean of its divisors is an integer number (4202730).

Almost surely, 2^28338172 is an apocalyptic number.

It is an amenable number.

28338172 is a deficient number, since it is larger than the sum of its proper divisors (22094588).

28338172 is a wasteful number, since it uses less digits than its factorization.

28338172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120140 (or 120138 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 28338172 is about 5323.3609684108. The cubic root of 28338172 is about 304.8764957273.

The spelling of 28338172 in words is "twenty-eight million, three hundred thirty-eight thousand, one hundred seventy-two".