28204260 has 48 divisors (see below), whose sum is σ = 90254976. Its totient is φ = 6446592.

The previous prime is 28204247. The next prime is 28204261. The reversal of 28204260 is 6240282.

It is a self number, because there is not a number n which added to its sum of digits gives 28204260.

It is not an unprimeable number, because it can be changed into a prime (28204261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33157 + ... + 33996.

It is an arithmetic number, because the mean of its divisors is an integer number (1880312).

Almost surely, 2^28204260 is an apocalyptic number.

28204260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28204260 is an abundant number, since it is smaller than the sum of its proper divisors (62050716).

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

28204260 is a wasteful number, since it uses less digits than its factorization.

28204260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67172 (or 67170 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28204260 is about 5310.7683059987. The cubic root of 28204260 is about 304.3955061117.

The spelling of 28204260 in words is "twenty-eight million, two hundred four thousand, two hundred sixty".