23015772 has 96 divisors (see below), whose sum is σ = 65307200. Its totient is φ = 7008768.

The previous prime is 23015767. The next prime is 23015777. The reversal of 23015772 is 27751032.

It is an interprime number because it is at equal distance from previous prime (23015767) and next prime (23015777).

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

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23015777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237228 + ... + 237324.

Almost surely, 2^23015772 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 23015772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32653600).

23015772 is an abundant number, since it is smaller than the sum of its proper divisors (42291428).

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

23015772 is a wasteful number, since it uses less digits than its factorization.

23015772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 23015772 is about 4797.4755861807. The cubic root of 23015772 is about 284.4516881610.

The spelling of 23015772 in words is "twenty-three million, fifteen thousand, seven hundred seventy-two".