22764261 has 32 divisors (see below), whose sum is σ = 35553280. Its totient is φ = 12830400.

The previous prime is 22764257. The next prime is 22764277. The reversal of 22764261 is 16246722.

22764261 = 188² + 189² + ... + 421².

It is not a de Polignac number, because 22764261 - 2² = 22764257 is a prime.

It is a super-2 number, since 2×22764261² = 1036423157752242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22764211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22476 + ... + 23466.

It is an arithmetic number, because the mean of its divisors is an integer number (1111040).

Almost surely, 2^22764261 is an apocalyptic number.

It is an amenable number.

22764261 is a deficient number, since it is larger than the sum of its proper divisors (12789019).

22764261 is a wasteful number, since it uses less digits than its factorization.

22764261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057.

The product of its digits is 8064, while the sum is 30.

The square root of 22764261 is about 4771.1907318823. The cubic root of 22764261 is about 283.4117502288.

The spelling of 22764261 in words is "twenty-two million, seven hundred sixty-four thousand, two hundred sixty-one".