22478807 has 12 divisors (see below), whose sum is σ = 24600744. Its totient is φ = 20418000.

The previous prime is 22478803. The next prime is 22478867. The reversal of 22478807 is 70887422.

It is not a de Polignac number, because 22478807 - 2² = 22478803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22478801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89432 + ... + 89682.

It is an arithmetic number, because the mean of its divisors is an integer number (2050062).

Almost surely, 2^22478807 is an apocalyptic number.

22478807 is a deficient number, since it is larger than the sum of its proper divisors (2121937).

22478807 is an equidigital number, since it uses as much as digits as its factorization.

22478807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 22478807 is about 4741.1820256134. The cubic root of 22478807 is about 282.2221435911. Note that the first 3 decimals are identical.

The spelling of 22478807 in words is "twenty-two million, four hundred seventy-eight thousand, eight hundred seven".