23312772 has 120 divisors (see below), whose sum is σ = 73451840. Its totient is φ = 6298560.

The previous prime is 23312767. The next prime is 23312789. The reversal of 23312772 is 27721332.

It is a happy number.

It is a super-3 number, since 3×23312772³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 42822 + ... + 43362.

Almost surely, 2^23312772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23312772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36725920).

23312772 is an abundant number, since it is smaller than the sum of its proper divisors (50139068).

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

23312772 is a wasteful number, since it uses less digits than its factorization.

23312772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 572 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 23312772 is about 4828.3301461271. The cubic root of 23312772 is about 285.6700026131.

The spelling of 23312772 in words is "twenty-three million, three hundred twelve thousand, seven hundred seventy-two".