22420791 has 24 divisors (see below), whose sum is σ = 34201440. Its totient is φ = 14125056.

The previous prime is 22420789. The next prime is 22420819. The reversal of 22420791 is 19702422.

It is not a de Polignac number, because 22420791 - 2¹ = 22420789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17815 + ... + 19031.

It is an arithmetic number, because the mean of its divisors is an integer number (1425060).

Almost surely, 2^22420791 is an apocalyptic number.

22420791 is a deficient number, since it is larger than the sum of its proper divisors (11780649).

22420791 is a wasteful number, since it uses less digits than its factorization.

22420791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1332 counting only the distinct ones).

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

The square root of 22420791 is about 4735.0597673102. The cubic root of 22420791 is about 281.9791368298.

The spelling of 22420791 in words is "twenty-two million, four hundred twenty thousand, seven hundred ninety-one".