15222828 has 24 divisors (see below), whose sum is σ = 35642880. Its totient is φ = 5056720.

The previous prime is 15222791. The next prime is 15222833. The reversal of 15222828 is 82822251.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 15222795 and 15222804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693 + ... + 5771.

It is an arithmetic number, because the mean of its divisors is an integer number (1485120).

Almost surely, 2^15222828 is an apocalyptic number.

It is an amenable number.

15222828 is an abundant number, since it is smaller than the sum of its proper divisors (20420052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15222828 is a wasteful number, since it uses less digits than its factorization.

15222828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397 (or 4395 counting only the distinct ones).

The product of its digits is 5120, while the sum is 30.

The square root of 15222828 is about 3901.6442687667. The cubic root of 15222828 is about 247.8364122346.

The spelling of 15222828 in words is "fifteen million, two hundred twenty-two thousand, eight hundred twenty-eight".