28204253 has 36 divisors (see below), whose sum is σ = 37116576. Its totient is φ = 21344400.

The previous prime is 28204247. The next prime is 28204261. The reversal of 28204253 is 35240282.

It is not a de Polignac number, because 28204253 - 2⁸ = 28203997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28204223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 397208 + ... + 397278.

It is an arithmetic number, because the mean of its divisors is an integer number (1031016).

Almost surely, 2^28204253 is an apocalyptic number.

It is an amenable number.

28204253 is a deficient number, since it is larger than the sum of its proper divisors (8912323).

28204253 is a wasteful number, since it uses less digits than its factorization.

28204253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28204253 is about 5310.7676469603. The cubic root of 28204253 is about 304.3954809291.

The spelling of 28204253 in words is "twenty-eight million, two hundred four thousand, two hundred fifty-three".