28180492 has 24 divisors (see below), whose sum is σ = 52856496. Its totient is φ = 13099008.

The previous prime is 28180487. The next prime is 28180499. The reversal of 28180492 is 29408182.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (28180499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3148 + ... + 8140.

It is an arithmetic number, because the mean of its divisors is an integer number (2202354).

Almost surely, 2^28180492 is an apocalyptic number.

It is an amenable number.

28180492 is a deficient number, since it is larger than the sum of its proper divisors (24676004).

28180492 is a wasteful number, since it uses less digits than its factorization.

28180492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097 (or 5095 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 28180492 is about 5308.5301167084. The cubic root of 28180492 is about 304.3099764123.

The spelling of 28180492 in words is "twenty-eight million, one hundred eighty thousand, four hundred ninety-two".