28054188 has 30 divisors (see below), whose sum is σ = 73340036. Its totient is φ = 9351288.

The previous prime is 28054157. The next prime is 28054193. The reversal of 28054188 is 88145082.

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

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 42970 + ... + 43617.

Almost surely, 2^28054188 is an apocalyptic number.

It is an amenable number.

28054188 is an abundant number, since it is smaller than the sum of its proper divisors (45285848).

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

28054188 is a wasteful number, since it uses less digits than its factorization.

28054188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86603 (or 86592 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 28054188 is about 5296.6204319358. The cubic root of 28054188 is about 303.8546598648.

The spelling of 28054188 in words is "twenty-eight million, fifty-four thousand, one hundred eighty-eight".