28200357 has 12 divisors (see below), whose sum is σ = 40919424. Its totient is φ = 18714600.

The previous prime is 28200349. The next prime is 28200379. The reversal of 28200357 is 75300282.

It is not a de Polignac number, because 28200357 - 2³ = 28200349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28200357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28200157) 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, 5019 + ... + 9032.

It is an arithmetic number, because the mean of its divisors is an integer number (3409952).

Almost surely, 2^28200357 is an apocalyptic number.

It is an amenable number.

28200357 is a deficient number, since it is larger than the sum of its proper divisors (12719067).

28200357 is a wasteful number, since it uses less digits than its factorization.

28200357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14280 (or 14277 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 28200357 is about 5310.4008323289. The cubic root of 28200357 is about 304.3814643739.

The spelling of 28200357 in words is "twenty-eight million, two hundred thousand, three hundred fifty-seven".