22478713 has 2 divisors, whose sum is σ = 22478714. Its totient is φ = 22478712.

The previous prime is 22478711. The next prime is 22478747. The reversal of 22478713 is 31787422.

It is an a-pointer prime, because the next prime (22478747) can be obtained adding 22478713 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14115049 + 8363664 = 3757^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 22478713 - 2¹ = 22478711 is a prime.

Together with 22478711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22478711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11239356 + 11239357.

It is an arithmetic number, because the mean of its divisors is an integer number (11239357).

Almost surely, 2^22478713 is an apocalyptic number.

It is an amenable number.

22478713 is a deficient number, since it is larger than the sum of its proper divisors (1).

22478713 is an equidigital number, since it uses as much as digits as its factorization.

22478713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 34.

The square root of 22478713 is about 4741.1721124633. The cubic root of 22478713 is about 282.2217501996.

The spelling of 22478713 in words is "twenty-two million, four hundred seventy-eight thousand, seven hundred thirteen".