22108977 has 16 divisors (see below), whose sum is σ = 35732160. Its totient is φ = 13399200.

The previous prime is 22108973. The next prime is 22108979. The reversal of 22108977 is 77980122.

It is not a de Polignac number, because 22108977 - 2² = 22108973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22108973) 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, 36924 + ... + 37517.

It is an arithmetic number, because the mean of its divisors is an integer number (2233260).

Almost surely, 2^22108977 is an apocalyptic number.

22108977 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22108977 is a deficient number, since it is larger than the sum of its proper divisors (13623183).

22108977 is a wasteful number, since it uses less digits than its factorization.

22108977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74461 (or 74455 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 22108977 is about 4702.0183963911. The cubic root of 22108977 is about 280.6658346207.

The spelling of 22108977 in words is "twenty-two million, one hundred eight thousand, nine hundred seventy-seven".