22828731 has 4 divisors (see below), whose sum is σ = 30438312. Its totient is φ = 15219152.

The previous prime is 22828711. The next prime is 22828763. The reversal of 22828731 is 13782822.

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

It is a cyclic number.

It is not a de Polignac number, because 22828731 - 2⁹ = 22828219 is a prime.

It is a super-2 number, since 2×22828731² = 1042301918140722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22828692 and 22828701.

It is not an unprimeable number, because it can be changed into a prime (22828711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3804786 + ... + 3804791.

It is an arithmetic number, because the mean of its divisors is an integer number (7609578).

Almost surely, 2^22828731 is an apocalyptic number.

22828731 is a deficient number, since it is larger than the sum of its proper divisors (7609581).

22828731 is an equidigital number, since it uses as much as digits as its factorization.

22828731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7609580.

The product of its digits is 10752, while the sum is 33.

The square root of 22828731 is about 4777.9421302481. The cubic root of 22828731 is about 283.6790454398.

The spelling of 22828731 in words is "twenty-two million, eight hundred twenty-eight thousand, seven hundred thirty-one".