22784973 has 8 divisors (see below), whose sum is σ = 31700928. Its totient is φ = 14529504.

The previous prime is 22784921. The next prime is 22784977. The reversal of 22784973 is 37948722.

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

It is not a de Polignac number, because 22784973 - 2⁸ = 22784717 is a prime.

It is a super-2 number, since 2×22784973² = 1038309989221458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22784977) 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, 165040 + ... + 165177.

It is an arithmetic number, because the mean of its divisors is an integer number (3962616).

Almost surely, 2^22784973 is an apocalyptic number.

22784973 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22784973 is a deficient number, since it is larger than the sum of its proper divisors (8915955).

22784973 is a wasteful number, since it uses less digits than its factorization.

22784973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330243.

The product of its digits is 169344, while the sum is 42.

The square root of 22784973 is about 4773.3607657499. The cubic root of 22784973 is about 283.4976779731.

The spelling of 22784973 in words is "twenty-two million, seven hundred eighty-four thousand, nine hundred seventy-three".