28855022 has 12 divisors (see below), whose sum is σ = 50349240. Its totient is φ = 12366396.

The previous prime is 28855007. The next prime is 28855027. The reversal of 28855022 is 22055882.

It is a happy number.

It is a super-2 number, since 2×28855022² = 1665224589240968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28855022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28855027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147122 + ... + 147317.

It is an arithmetic number, because the mean of its divisors is an integer number (4195770).

Almost surely, 2^28855022 is an apocalyptic number.

28855022 is a deficient number, since it is larger than the sum of its proper divisors (21494218).

28855022 is a wasteful number, since it uses less digits than its factorization.

28855022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294455 (or 294448 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 28855022 is about 5371.6870720473. The cubic root of 28855022 is about 306.7188519152.

The spelling of 28855022 in words is "twenty-eight million, eight hundred fifty-five thousand, twenty-two".