22937897 has 4 divisors (see below), whose sum is σ = 23070660. Its totient is φ = 22805136.

The previous prime is 22937839. The next prime is 22937909. The reversal of 22937897 is 79873922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17606416 + 5331481 = 4196^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 22937897 - 2¹⁰ = 22936873 is a prime.

It is a super-2 number, since 2×22937897² = 1052294237565218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22934897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66122 + ... + 66467.

It is an arithmetic number, because the mean of its divisors is an integer number (5767665).

Almost surely, 2^22937897 is an apocalyptic number.

It is an amenable number.

22937897 is a deficient number, since it is larger than the sum of its proper divisors (132763).

22937897 is a wasteful number, since it uses less digits than its factorization.

22937897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132762.

The product of its digits is 381024, while the sum is 47.

The square root of 22937897 is about 4789.3524614503. The cubic root of 22937897 is about 284.1305068706.

The spelling of 22937897 in words is "twenty-two million, nine hundred thirty-seven thousand, eight hundred ninety-seven".