28728092 has 12 divisors (see below), whose sum is σ = 51344160. Its totient is φ = 14058336.

The previous prime is 28728083. The next prime is 28728097. The reversal of 28728092 is 29082782.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28728097) 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, 76217 + ... + 76592.

It is an arithmetic number, because the mean of its divisors is an integer number (4278680).

Almost surely, 2^28728092 is an apocalyptic number.

It is an amenable number.

28728092 is a deficient number, since it is larger than the sum of its proper divisors (22616068).

28728092 is a wasteful number, since it uses less digits than its factorization.

28728092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152860 (or 152858 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 28728092 is about 5359.8593265122. The cubic root of 28728092 is about 306.2684502559.

The spelling of 28728092 in words is "twenty-eight million, seven hundred twenty-eight thousand, ninety-two".