23195772 has 18 divisors (see below), whose sum is σ = 58633848. Its totient is φ = 7731912.

The previous prime is 23195759. The next prime is 23195779. The reversal of 23195772 is 27759132.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 644327 = 23195772 / (2 + 3 + 1 + 9 + 5 + 7 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23195779) 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 5 ways as a sum of consecutive naturals, for example, 322128 + ... + 322199.

It is an arithmetic number, because the mean of its divisors is an integer number (3257436).

Almost surely, 2^23195772 is an apocalyptic number.

It is an amenable number.

23195772 is an abundant number, since it is smaller than the sum of its proper divisors (35438076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23195772 is a wasteful number, since it uses less digits than its factorization.

23195772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644337 (or 644332 counting only the distinct ones).

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

The square root of 23195772 is about 4816.1989161578. The cubic root of 23195772 is about 285.1913027712.

Adding to 23195772 its product of digits (26460), we get a palindrome (23222232).

The spelling of 23195772 in words is "twenty-three million, one hundred ninety-five thousand, seven hundred seventy-two".