22978026 has 16 divisors (see below), whose sum is σ = 51062400. Its totient is φ = 7659324.

The previous prime is 22978003. The next prime is 22978061. The reversal of 22978026 is 62087922.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212706 + ... + 212813.

It is an arithmetic number, because the mean of its divisors is an integer number (3191400).

Almost surely, 2^22978026 is an apocalyptic number.

22978026 is an abundant number, since it is smaller than the sum of its proper divisors (28084374).

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

22978026 is a wasteful number, since it uses less digits than its factorization.

22978026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425530 (or 425524 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 22978026 is about 4793.5400279960. The cubic root of 22978026 is about 284.2961022681.

The spelling of 22978026 in words is "twenty-two million, nine hundred seventy-eight thousand, twenty-six".