22722722 has 8 divisors (see below), whose sum is σ = 37182672. Its totient is φ = 10328500.

The previous prime is 22722719. The next prime is 22722731.

22722722 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22722691 and 22722700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516404 + ... + 516447.

It is an arithmetic number, because the mean of its divisors is an integer number (4647834).

Almost surely, 2^22722722 is an apocalyptic number.

22722722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22722722 is a deficient number, since it is larger than the sum of its proper divisors (14459950).

22722722 is a wasteful number, since it uses less digits than its factorization.

22722722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032864.

The product of its digits is 3136, while the sum is 26.

The square root of 22722722 is about 4766.8356380307. The cubic root of 22722722 is about 283.2392604262.

It can be divided in two parts, 227227 and 22, that multiplied together give a palindrome (4998994).

The spelling of 22722722 in words is "twenty-two million, seven hundred twenty-two thousand, seven hundred twenty-two".