28822642 has 16 divisors (see below), whose sum is σ = 44396352. Its totient is φ = 14026320.

The previous prime is 28822637. The next prime is 28822643. The reversal of 28822642 is 24622882.

It is a junction number, because it is equal to n+sod(n) for n = 28822598 and 28822607.

It is not an unprimeable number, because it can be changed into a prime (28822643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39283 + ... + 40009.

It is an arithmetic number, because the mean of its divisors is an integer number (2774772).

Almost surely, 2^28822642 is an apocalyptic number.

28822642 is a deficient number, since it is larger than the sum of its proper divisors (15573710).

28822642 is a wasteful number, since it uses less digits than its factorization.

28822642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233.

The product of its digits is 24576, while the sum is 34.

The square root of 28822642 is about 5368.6722753396. The cubic root of 28822642 is about 306.6040795926.

The spelling of 28822642 in words is "twenty-eight million, eight hundred twenty-two thousand, six hundred forty-two".