23193396 has 18 divisors (see below), whose sum is σ = 58627842. Its totient is φ = 7731120.

The previous prime is 23193377. The next prime is 23193397. The reversal of 23193396 is 69339132.

It is a happy number.

23193396 is a `hidden beast` number, since 2 + 319 + 339 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21288996 + 1904400 = 4614^2 + 1380^2 .

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

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: 644261 = 23193396 / (2 + 3 + 1 + 9 + 3 + 3 + 9 + 6).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 23193396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23193397) 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, 322095 + ... + 322166.

Almost surely, 2^23193396 is an apocalyptic number.

It is an amenable number.

23193396 is an abundant number, since it is smaller than the sum of its proper divisors (35434446).

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

23193396 is a wasteful number, since it uses less digits than its factorization.

23193396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644271 (or 644266 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 23193396 is about 4815.9522422881. The cubic root of 23193396 is about 285.1815648231.

The spelling of 23193396 in words is "twenty-three million, one hundred ninety-three thousand, three hundred ninety-six".