22278968 has 8 divisors (see below), whose sum is σ = 41773080. Its totient is φ = 11139480.

The previous prime is 22278953. The next prime is 22278983. The reversal of 22278968 is 86987222.

It is an interprime number because it is at equal distance from previous prime (22278953) and next prime (22278983).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392428 + ... + 1392443.

It is an arithmetic number, because the mean of its divisors is an integer number (5221635).

Almost surely, 2^22278968 is an apocalyptic number.

It is an amenable number.

22278968 is a deficient number, since it is larger than the sum of its proper divisors (19494112).

22278968 is a wasteful number, since it uses less digits than its factorization.

22278968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784877 (or 2784873 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 22278968 is about 4720.0601691080. The cubic root of 22278968 is about 281.3833245744.

The spelling of 22278968 in words is "twenty-two million, two hundred seventy-eight thousand, nine hundred sixty-eight".