22223478 has 16 divisors (see below), whose sum is σ = 44947440. Its totient is φ = 7324416.

The previous prime is 22223477. The next prime is 22223479. The reversal of 22223478 is 87432222.

It is an interprime number because it is at equal distance from previous prime (22223477) and next prime (22223479).

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20275 + ... + 21342.

It is an arithmetic number, because the mean of its divisors is an integer number (2809215).

Almost surely, 2^22223478 is an apocalyptic number.

22223478 is an abundant number, since it is smaller than the sum of its proper divisors (22723962).

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

22223478 is a wasteful number, since it uses less digits than its factorization.

22223478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41711.

The product of its digits is 10752, while the sum is 30.

The square root of 22223478 is about 4714.1784013760. The cubic root of 22223478 is about 281.1495174875.

The spelling of 22223478 in words is "twenty-two million, two hundred twenty-three thousand, four hundred seventy-eight".