28475564 has 48 divisors (see below), whose sum is σ = 58000320. Its totient is φ = 12122880.

The previous prime is 28475563. The next prime is 28475569. The reversal of 28475564 is 46557482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28475563) 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, 34274 + ... + 35094.

It is an arithmetic number, because the mean of its divisors is an integer number (1208340).

Almost surely, 2^28475564 is an apocalyptic number.

It is an amenable number.

28475564 is an abundant number, since it is smaller than the sum of its proper divisors (29524756).

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

28475564 is a wasteful number, since it uses less digits than its factorization.

28475564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 888 counting only the distinct ones).

The product of its digits is 268800, while the sum is 41.

The square root of 28475564 is about 5336.2499941438. The cubic root of 28475564 is about 305.3684126453.

The spelling of 28475564 in words is "twenty-eight million, four hundred seventy-five thousand, five hundred sixty-four".