22712863 has 4 divisors (see below), whose sum is σ = 23445568. Its totient is φ = 21980160.

The previous prime is 22712861. The next prime is 22712873. The reversal of 22712863 is 36821722.

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

It is a cyclic number.

It is not a de Polignac number, because 22712863 - 2¹ = 22712861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 732673 = 22712863 / (2 + 2 + 7 + 1 + 2 + 8 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22712861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366306 + ... + 366367.

It is an arithmetic number, because the mean of its divisors is an integer number (5861392).

Almost surely, 2^22712863 is an apocalyptic number.

22712863 is a deficient number, since it is larger than the sum of its proper divisors (732705).

22712863 is an equidigital number, since it uses as much as digits as its factorization.

22712863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732704.

The product of its digits is 8064, while the sum is 31.

The square root of 22712863 is about 4765.8014016532. The cubic root of 22712863 is about 283.1982902785.

The spelling of 22712863 in words is "twenty-two million, seven hundred twelve thousand, eight hundred sixty-three".