28892222 has 4 divisors (see below), whose sum is σ = 43338336. Its totient is φ = 14446110.

The previous prime is 28892219. The next prime is 28892257. The reversal of 28892222 is 22229882.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7223054 + ... + 7223057.

It is an arithmetic number, because the mean of its divisors is an integer number (10834584).

Almost surely, 2^28892222 is an apocalyptic number.

28892222 is a deficient number, since it is larger than the sum of its proper divisors (14446114).

28892222 is a wasteful number, since it uses less digits than its factorization.

28892222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14446113.

The product of its digits is 18432, while the sum is 35.

The square root of 28892222 is about 5375.1485560866. The cubic root of 28892222 is about 306.8506030024.

The spelling of 28892222 in words is "twenty-eight million, eight hundred ninety-two thousand, two hundred twenty-two".