28225550 has 24 divisors (see below), whose sum is σ = 52991400. Its totient is φ = 11184480.

The previous prime is 28225543. The next prime is 28225567. The reversal of 28225550 is 5552282.

It is a congruent number.

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, 2861 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (2207975).

Almost surely, 2^28225550 is an apocalyptic number.

28225550 is a deficient number, since it is larger than the sum of its proper divisors (24765850).

28225550 is a wasteful number, since it uses less digits than its factorization.

28225550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300 (or 5295 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 28225550 is about 5312.7723459603. The cubic root of 28225550 is about 304.4720778824.

The spelling of 28225550 in words is "twenty-eight million, two hundred twenty-five thousand, five hundred fifty".