22778673 has 16 divisors (see below), whose sum is σ = 30888000. Its totient is φ = 14930240.

The previous prime is 22778647. The next prime is 22778677. The reversal of 22778673 is 37687722.

It is a cyclic number.

It is not a de Polignac number, because 22778673 - 2¹⁰ = 22777649 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

Its product of digits (197568) is a multiple of the sum of its prime divisors (672).

It is not an unprimeable number, because it can be changed into a prime (22778677) 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 15 ways as a sum of consecutive naturals, for example, 58363 + ... + 58751.

It is an arithmetic number, because the mean of its divisors is an integer number (1930500).

Almost surely, 2^22778673 is an apocalyptic number.

It is an amenable number.

22778673 is a deficient number, since it is larger than the sum of its proper divisors (8109327).

22778673 is a wasteful number, since it uses less digits than its factorization.

22778673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its digits is 197568, while the sum is 42.

The square root of 22778673 is about 4772.7008077188. The cubic root of 22778673 is about 283.4715467153.

The spelling of 22778673 in words is "twenty-two million, seven hundred seventy-eight thousand, six hundred seventy-three".