22120749 has 16 divisors (see below), whose sum is σ = 37453440. Its totient is φ = 12640320.

The previous prime is 22120741. The next prime is 22120759. The reversal of 22120749 is 94702122.

It is not a de Polignac number, because 22120749 - 2³ = 22120741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58332 + ... + 58709.

It is an arithmetic number, because the mean of its divisors is an integer number (2340840).

Almost surely, 2^22120749 is an apocalyptic number.

It is an amenable number.

22120749 is a deficient number, since it is larger than the sum of its proper divisors (15332691).

22120749 is a wasteful number, since it uses less digits than its factorization.

22120749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117057 (or 117051 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 22120749 is about 4703.2700326475. The cubic root of 22120749 is about 280.7156396082.

The spelling of 22120749 in words is "twenty-two million, one hundred twenty thousand, seven hundred forty-nine".