28725022 has 32 divisors (see below), whose sum is σ = 47407680. Its totient is φ = 13009920.

The previous prime is 28724981. The next prime is 28725029. The reversal of 28725022 is 22052782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28725029) 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, 81198 + ... + 81550.

It is an arithmetic number, because the mean of its divisors is an integer number (1481490).

Almost surely, 2^28725022 is an apocalyptic number.

28725022 is a deficient number, since it is larger than the sum of its proper divisors (18682658).

28725022 is a wasteful number, since it uses less digits than its factorization.

28725022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28725022 is about 5359.5729307474. The cubic root of 28725022 is about 306.2575401725.

The spelling of 28725022 in words is "twenty-eight million, seven hundred twenty-five thousand, twenty-two".