28156048 has 20 divisors (see below), whose sum is σ = 56924928. Its totient is φ = 13465760.

The previous prime is 28156019. The next prime is 28156049. The reversal of 28156048 is 84065182.

It is not an unprimeable number, because it can be changed into a prime (28156049) 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, 37888 + ... + 38623.

Almost surely, 2^28156048 is an apocalyptic number.

It is an amenable number.

28156048 is an abundant number, since it is smaller than the sum of its proper divisors (28768880).

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

28156048 is a wasteful number, since it uses less digits than its factorization.

28156048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76542 (or 76536 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28156048 is about 5306.2272849926. The cubic root of 28156048 is about 304.2219639336.

The spelling of 28156048 in words is "twenty-eight million, one hundred fifty-six thousand, forty-eight".