22978775 has 12 divisors (see below), whose sum is σ = 28603824. Its totient is φ = 18312000.

The previous prime is 22978691. The next prime is 22978777. The reversal of 22978775 is 57787922.

It is not a de Polignac number, because 22978775 - 2⁸ = 22978519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22978777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5390 + ... + 8660.

It is an arithmetic number, because the mean of its divisors is an integer number (2383652).

Almost surely, 2^22978775 is an apocalyptic number.

22978775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22978775 is a deficient number, since it is larger than the sum of its proper divisors (5625049).

22978775 is a wasteful number, since it uses less digits than its factorization.

22978775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562 (or 3557 counting only the distinct ones).

The product of its digits is 493920, while the sum is 47.

The square root of 22978775 is about 4793.6181533368. The cubic root of 22978775 is about 284.2991912406.

The spelling of 22978775 in words is "twenty-two million, nine hundred seventy-eight thousand, seven hundred seventy-five".