22991746 has 8 divisors (see below), whose sum is σ = 34642944. Its totient is φ = 11444100.

The previous prime is 22991737. The next prime is 22991753. The reversal of 22991746 is 64719922.

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 = 22991699 and 22991708.

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 in 3 ways as a sum of consecutive naturals, for example, 25330 + ... + 26221.

It is an arithmetic number, because the mean of its divisors is an integer number (4330368).

Almost surely, 2^22991746 is an apocalyptic number.

22991746 is a deficient number, since it is larger than the sum of its proper divisors (11651198).

22991746 is a wasteful number, since it uses less digits than its factorization.

22991746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51776.

The product of its digits is 54432, while the sum is 40.

The square root of 22991746 is about 4794.9709071067. The cubic root of 22991746 is about 284.3526746713.

The spelling of 22991746 in words is "twenty-two million, nine hundred ninety-one thousand, seven hundred forty-six".