23455572 has 48 divisors (see below), whose sum is σ = 63178752. Its totient is φ = 6634080.

The previous prime is 23455571. The next prime is 23455589. The reversal of 23455572 is 27555432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23455571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7297 + ... + 10007.

It is an arithmetic number, because the mean of its divisors is an integer number (1316224).

Almost surely, 2^23455572 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 23455572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31589376).

23455572 is an abundant number, since it is smaller than the sum of its proper divisors (39723180).

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

23455572 is a wasteful number, since it uses less digits than its factorization.

23455572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828 (or 2826 counting only the distinct ones).

The product of its digits is 42000, while the sum is 33.

The square root of 23455572 is about 4843.0952912368. The cubic root of 23455572 is about 286.2520964995.

The spelling of 23455572 in words is "twenty-three million, four hundred fifty-five thousand, five hundred seventy-two".