22478268 has 36 divisors (see below), whose sum is σ = 54844328. Its totient is φ = 7164960.

The previous prime is 22478251. The next prime is 22478303. The reversal of 22478268 is 86287422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4578 + ... + 8118.

Almost surely, 2^22478268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22478268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27422164).

22478268 is an abundant number, since it is smaller than the sum of its proper divisors (32366060).

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

22478268 is a wasteful number, since it uses less digits than its factorization.

22478268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594 (or 3569 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 22478268 is about 4741.1251829075. The cubic root of 22478268 is about 282.2198878523.

The spelling of 22478268 in words is "twenty-two million, four hundred seventy-eight thousand, two hundred sixty-eight".