22320897 has 16 divisors (see below), whose sum is σ = 30723840. Its totient is φ = 14406912.

The previous prime is 22320871. The next prime is 22320901. The reversal of 22320897 is 79802322.

It is not a de Polignac number, because 22320897 - 2¹⁶ = 22255361 is a prime.

It is a super-3 number, since 3×22320897³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22320797) 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, 11673 + ... + 13449.

It is an arithmetic number, because the mean of its divisors is an integer number (1920240).

Almost surely, 2^22320897 is an apocalyptic number.

It is an amenable number.

22320897 is a deficient number, since it is larger than the sum of its proper divisors (8402943).

22320897 is a wasteful number, since it uses less digits than its factorization.

22320897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 22320897 is about 4724.4996560482. The cubic root of 22320897 is about 281.5597350167.

The spelling of 22320897 in words is "twenty-two million, three hundred twenty thousand, eight hundred ninety-seven".