22491562 has 8 divisors (see below), whose sum is σ = 35204256. Its totient is φ = 10756812.

The previous prime is 22491551. The next prime is 22491563. The reversal of 22491562 is 26519422.

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

It is a super-2 number, since 2×22491562² = 1011740722399688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22491563) 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, 244428 + ... + 244519.

It is an arithmetic number, because the mean of its divisors is an integer number (4400532).

Almost surely, 2^22491562 is an apocalyptic number.

22491562 is a deficient number, since it is larger than the sum of its proper divisors (12712694).

22491562 is a wasteful number, since it uses less digits than its factorization.

22491562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488972.

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

The square root of 22491562 is about 4742.5269635501. The cubic root of 22491562 is about 282.2755133095.

The spelling of 22491562 in words is "twenty-two million, four hundred ninety-one thousand, five hundred sixty-two".