28432822 has 20 divisors (see below), whose sum is σ = 46962180. Its totient is φ = 12910700.

The previous prime is 28432819. The next prime is 28432879. The reversal of 28432822 is 22823482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28797 + ... + 29767.

It is an arithmetic number, because the mean of its divisors is an integer number (2348109).

Almost surely, 2^28432822 is an apocalyptic number.

28432822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28432822 is a deficient number, since it is larger than the sum of its proper divisors (18529358).

28432822 is an frugal number, since it uses more digits than its factorization.

28432822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 984 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 28432822 is about 5332.2436178404. The cubic root of 28432822 is about 305.2155495033.

It can be divided in two parts, 2843 and 2822, that added together give a palindrome (5665).

The spelling of 28432822 in words is "twenty-eight million, four hundred thirty-two thousand, eight hundred twenty-two".