28056292 has 36 divisors (see below), whose sum is σ = 54832176. Its totient is φ = 12457120.

The previous prime is 28056277. The next prime is 28056313. The reversal of 28056292 is 29265082.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123483 + ... + 123709.

It is an arithmetic number, because the mean of its divisors is an integer number (1523116).

Almost surely, 2^28056292 is an apocalyptic number.

28056292 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28056292 is a deficient number, since it is larger than the sum of its proper divisors (26775884).

28056292 is a wasteful number, since it uses less digits than its factorization.

28056292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 28056292 is about 5296.8190454272. The cubic root of 28056292 is about 303.8622558100.

The spelling of 28056292 in words is "twenty-eight million, fifty-six thousand, two hundred ninety-two".