22749434 has 16 divisors (see below), whose sum is σ = 36246528. Its totient is φ = 10671552.

The previous prime is 22749431. The next prime is 22749439. The reversal of 22749434 is 43494722.

It is a junction number, because it is equal to n+sod(n) for n = 22749394 and 22749403.

It is not an unprimeable number, because it can be changed into a prime (22749431) 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 7 ways as a sum of consecutive naturals, for example, 12149 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (2265408).

Almost surely, 2^22749434 is an apocalyptic number.

22749434 is a deficient number, since it is larger than the sum of its proper divisors (13497094).

22749434 is a wasteful number, since it uses less digits than its factorization.

22749434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149.

The product of its digits is 48384, while the sum is 35.

The square root of 22749434 is about 4769.6366737939. The cubic root of 22749434 is about 283.3502055312.

The spelling of 22749434 in words is "twenty-two million, seven hundred forty-nine thousand, four hundred thirty-four".