22404791 has 8 divisors (see below), whose sum is σ = 23303280. Its totient is φ = 21514752.

The previous prime is 22404787. The next prime is 22404803. The reversal of 22404791 is 19740422.

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

It is not a de Polignac number, because 22404791 - 2² = 22404787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22404731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3596 + ... + 7598.

It is an arithmetic number, because the mean of its divisors is an integer number (2912910).

Almost surely, 2^22404791 is an apocalyptic number.

22404791 is a deficient number, since it is larger than the sum of its proper divisors (898489).

22404791 is a wasteful number, since it uses less digits than its factorization.

22404791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 22404791 is about 4733.3699411730. The cubic root of 22404791 is about 281.9120452358.

The spelling of 22404791 in words is "twenty-two million, four hundred four thousand, seven hundred ninety-one".