23165722 has 8 divisors (see below), whose sum is σ = 35946900. Its totient is φ = 11183424.

The previous prime is 23165707. The next prime is 23165743. The reversal of 23165722 is 22756132.

It can be written as a sum of positive squares in 2 ways, for example, as 20602521 + 2563201 = 4539^2 + 1601^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 199647 + ... + 199762.

Almost surely, 2^23165722 is an apocalyptic number.

23165722 is a deficient number, since it is larger than the sum of its proper divisors (12781178).

23165722 is a wasteful number, since it uses less digits than its factorization.

23165722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399440.

The product of its digits is 5040, while the sum is 28.

The square root of 23165722 is about 4813.0782250032. The cubic root of 23165722 is about 285.0680949425.

The spelling of 23165722 in words is "twenty-three million, one hundred sixty-five thousand, seven hundred twenty-two".