18768722 has 16 divisors (see below), whose sum is σ = 32383680. Its totient is φ = 7991568.

The previous prime is 18768721. The next prime is 18768727. The reversal of 18768722 is 22786781.

It is a self number, because there is not a number n which added to its sum of digits gives 18768722.

It is not an unprimeable number, because it can be changed into a prime (18768721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072 + ... + 6467.

It is an arithmetic number, because the mean of its divisors is an integer number (2023980).

Almost surely, 2^18768722 is an apocalyptic number.

18768722 is a deficient number, since it is larger than the sum of its proper divisors (13614958).

18768722 is a wasteful number, since it uses less digits than its factorization.

18768722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8705.

The product of its digits is 75264, while the sum is 41.

The square root of 18768722 is about 4332.2883098889. The cubic root of 18768722 is about 265.7530355206.

The spelling of 18768722 in words is "eighteen million, seven hundred sixty-eight thousand, seven hundred twenty-two".