22911628 has 6 divisors (see below), whose sum is σ = 40095356. Its totient is φ = 11455812.

The previous prime is 22911613. The next prime is 22911641. The reversal of 22911628 is 82611922.

It is a super-2 number, since 2×22911628² = 1049885395220768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22911628.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2863950 + ... + 2863957.

Almost surely, 2^22911628 is an apocalyptic number.

It is an amenable number.

22911628 is a deficient number, since it is larger than the sum of its proper divisors (17183728).

22911628 is a wasteful number, since it uses less digits than its factorization.

22911628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727911 (or 5727909 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 22911628 is about 4786.6092382813. The cubic root of 22911628 is about 284.0220012050.

The spelling of 22911628 in words is "twenty-two million, nine hundred eleven thousand, six hundred twenty-eight".