22971897 has 16 divisors (see below), whose sum is σ = 36650880. Its totient is φ = 14136336.

The previous prime is 22971881. The next prime is 22971911. The reversal of 22971897 is 79817922.

It is not a de Polignac number, because 22971897 - 2⁴ = 22971881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22971497) 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, 32373 + ... + 33074.

It is an arithmetic number, because the mean of its divisors is an integer number (2290680).

Almost surely, 2^22971897 is an apocalyptic number.

22971897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22971897 is a deficient number, since it is larger than the sum of its proper divisors (13678983).

22971897 is a wasteful number, since it uses less digits than its factorization.

22971897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65469 (or 65463 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 22971897 is about 4792.9006874752. The cubic root of 22971897 is about 284.2708229606.

The spelling of 22971897 in words is "twenty-two million, nine hundred seventy-one thousand, eight hundred ninety-seven".