22478867 has 2 divisors, whose sum is σ = 22478868. Its totient is φ = 22478866.

The previous prime is 22478803. The next prime is 22478891. The reversal of 22478867 is 76887422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22478867 - 2⁶ = 22478803 is a prime.

It is not a weakly prime, because it can be changed into another prime (22478167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11239433 + 11239434.

It is an arithmetic number, because the mean of its divisors is an integer number (11239434).

Almost surely, 2^22478867 is an apocalyptic number.

22478867 is a deficient number, since it is larger than the sum of its proper divisors (1).

22478867 is an equidigital number, since it uses as much as digits as its factorization.

22478867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 44.

The square root of 22478867 is about 4741.1883531452. The cubic root of 22478867 is about 282.2223946915. Note that the first 3 decimals are identical.

The spelling of 22478867 in words is "twenty-two million, four hundred seventy-eight thousand, eight hundred sixty-seven".