28354172 has 36 divisors (see below), whose sum is σ = 62339760. Its totient is φ = 11045760.

The previous prime is 28354153. The next prime is 28354177. The reversal of 28354172 is 27145382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28354177) 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 11 ways as a sum of consecutive naturals, for example, 797 + ... + 7572.

It is an arithmetic number, because the mean of its divisors is an integer number (1731660).

Almost surely, 2^28354172 is an apocalyptic number.

28354172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28354172 is an abundant number, since it is smaller than the sum of its proper divisors (33985588).

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

28354172 is a wasteful number, since it uses less digits than its factorization.

28354172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402 (or 8389 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 28354172 is about 5324.8635663273. The cubic root of 28354172 is about 304.9338636498.

It can be divided in two parts, 2835 and 4172, that added together give a palindrome (7007).

The spelling of 28354172 in words is "twenty-eight million, three hundred fifty-four thousand, one hundred seventy-two".