22478267 has 16 divisors (see below), whose sum is σ = 27786240. Its totient is φ = 17743488.

The previous prime is 22478251. The next prime is 22478303. The reversal of 22478267 is 76287422.

It is a happy number.

It is not a de Polignac number, because 22478267 - 2⁴ = 22478251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22478267.

It is not an unprimeable number, because it can be changed into a prime (22478227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3584 + ... + 7602.

It is an arithmetic number, because the mean of its divisors is an integer number (1736640).

Almost surely, 2^22478267 is an apocalyptic number.

22478267 is a deficient number, since it is larger than the sum of its proper divisors (5307973).

22478267 is a wasteful number, since it uses less digits than its factorization.

22478267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090.

The product of its digits is 75264, while the sum is 38.

The square root of 22478267 is about 4741.1250774473. The cubic root of 22478267 is about 282.2198836672.

The spelling of 22478267 in words is "twenty-two million, four hundred seventy-eight thousand, two hundred sixty-seven".