28477222 has 8 divisors (see below), whose sum is σ = 42874272. Its totient is φ = 14185800.

The previous prime is 28477213. The next prime is 28477259. The reversal of 28477222 is 22277482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25729 + ... + 26812.

It is an arithmetic number, because the mean of its divisors is an integer number (5359284).

Almost surely, 2^28477222 is an apocalyptic number.

28477222 is a deficient number, since it is larger than the sum of its proper divisors (14397050).

28477222 is a wasteful number, since it uses less digits than its factorization.

28477222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52814.

The product of its digits is 25088, while the sum is 34.

The square root of 28477222 is about 5336.4053444243. The cubic root of 28477222 is about 305.3743392590.

The spelling of 28477222 in words is "twenty-eight million, four hundred seventy-seven thousand, two hundred twenty-two".