22649791 has 8 divisors (see below), whose sum is σ = 23002560. Its totient is φ = 22299648.

The previous prime is 22649789. The next prime is 22649801. The reversal of 22649791 is 19794622.

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

It is a cyclic number.

It is not a de Polignac number, because 22649791 - 2¹ = 22649789 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22649701) 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, 22695 + ... + 23671.

It is an arithmetic number, because the mean of its divisors is an integer number (2875320).

Almost surely, 2^22649791 is an apocalyptic number.

22649791 is a deficient number, since it is larger than the sum of its proper divisors (352769).

22649791 is an equidigital number, since it uses as much as digits as its factorization.

22649791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313.

The product of its digits is 54432, while the sum is 40.

The square root of 22649791 is about 4759.1796562013. The cubic root of 22649791 is about 282.9359067730.

The spelling of 22649791 in words is "twenty-two million, six hundred forty-nine thousand, seven hundred ninety-one".