22720694 has 16 divisors (see below), whose sum is σ = 35985600. Its totient is φ = 10729224.

The previous prime is 22720679. The next prime is 22720741. The reversal of 22720694 is 49602722.

It is a self number, because there is not a number n which added to its sum of digits gives 22720694.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15209 + ... + 16635.

It is an arithmetic number, because the mean of its divisors is an integer number (2249100).

Almost surely, 2^22720694 is an apocalyptic number.

22720694 is a deficient number, since it is larger than the sum of its proper divisors (13264906).

22720694 is a wasteful number, since it uses less digits than its factorization.

22720694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 22720694 is about 4766.6229135521. The cubic root of 22720694 is about 283.2308338198.

The spelling of 22720694 in words is "twenty-two million, seven hundred twenty thousand, six hundred ninety-four".