22157793 has 20 divisors (see below), whose sum is σ = 37829440. Its totient is φ = 12661272.

The previous prime is 22157789. The next prime is 22157797. The reversal of 22157793 is 39775122.

It is an interprime number because it is at equal distance from previous prime (22157789) and next prime (22157797).

It is not a de Polignac number, because 22157793 - 2² = 22157789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22157797) 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 19 ways as a sum of consecutive naturals, for example, 18973 + ... + 20106.

It is an arithmetic number, because the mean of its divisors is an integer number (1891472).

Almost surely, 2^22157793 is an apocalyptic number.

It is an amenable number.

22157793 is a deficient number, since it is larger than the sum of its proper divisors (15671647).

22157793 is an equidigital number, since it uses as much as digits as its factorization.

22157793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39098 (or 39089 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 22157793 is about 4707.2064964265. The cubic root of 22157793 is about 280.8722502008.

The spelling of 22157793 in words is "twenty-two million, one hundred fifty-seven thousand, seven hundred ninety-three".