22820953 has 4 divisors (see below), whose sum is σ = 24163380. Its totient is φ = 21478528.

The previous prime is 22820951. The next prime is 22820977. The reversal of 22820953 is 35902822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35902822 = 2 ⋅17951411.

It can be written as a sum of positive squares in 2 ways, for example, as 11778624 + 11042329 = 3432^2 + 3323^2 .

It is a cyclic number.

It is not a de Polignac number, because 22820953 - 2¹ = 22820951 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22820951) 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, 671188 + ... + 671221.

It is an arithmetic number, because the mean of its divisors is an integer number (6040845).

Almost surely, 2^22820953 is an apocalyptic number.

It is an amenable number.

22820953 is a deficient number, since it is larger than the sum of its proper divisors (1342427).

22820953 is a wasteful number, since it uses less digits than its factorization.

22820953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342426.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 22820953 is about 4777.1281121611. The cubic root of 22820953 is about 283.6468242555.

The spelling of 22820953 in words is "twenty-two million, eight hundred twenty thousand, nine hundred fifty-three".