22806028 has 12 divisors (see below), whose sum is σ = 45612112. Its totient is φ = 9774000.

The previous prime is 22806011. The next prime is 22806029. The reversal of 22806028 is 82060822.

It is a happy number.

22806028 is an admirable number.

It is a super-2 number, since 2×22806028² = 1040229826273568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 814501 = 22806028 / (2 + 2 + 8 + 0 + 6 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 22805987 and 22806005.

It is not an unprimeable number, because it can be changed into a prime (22806029) 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, 407223 + ... + 407278.

Almost surely, 2^22806028 is an apocalyptic number.

22806028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22806028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22806028 is a wasteful number, since it uses less digits than its factorization.

22806028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814512 (or 814510 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 22806028 is about 4775.5657256497. The cubic root of 22806028 is about 283.5849753619.

The spelling of 22806028 in words is "twenty-two million, eight hundred six thousand, twenty-eight".