28155792 has 60 divisors (see below), whose sum is σ = 84618096. Its totient is φ = 8043840.

The previous prime is 28155769. The next prime is 28155797. The reversal of 28155792 is 29755182.

It is a self number, because there is not a number n which added to its sum of digits gives 28155792.

It is not an unprimeable number, because it can be changed into a prime (28155797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3634 + ... + 8337.

Almost surely, 2^28155792 is an apocalyptic number.

It is an amenable number.

28155792 is an abundant number, since it is smaller than the sum of its proper divisors (56462304).

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

28155792 is a wasteful number, since it uses less digits than its factorization.

28155792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11996 (or 11983 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 28155792 is about 5306.2031623375. The cubic root of 28155792 is about 304.2210419167.

The spelling of 28155792 in words is "twenty-eight million, one hundred fifty-five thousand, seven hundred ninety-two".