23266728 has 24 divisors (see below), whose sum is σ = 63014250. Its totient is φ = 7755552.

The previous prime is 23266717. The next prime is 23266757. The reversal of 23266728 is 82766232.

It can be written as a sum of positive squares in only one way, i.e., 19873764 + 3392964 = 4458^2 + 1842^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23266692 and 23266701.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161503 + ... + 161646.

Almost surely, 2^23266728 is an apocalyptic number.

It is an amenable number.

23266728 is an abundant number, since it is smaller than the sum of its proper divisors (39747522).

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

23266728 is a wasteful number, since it uses less digits than its factorization.

23266728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323161 (or 323154 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 23266728 is about 4823.5596813971. The cubic root of 23266728 is about 285.4818073659.

The spelling of 23266728 in words is "twenty-three million, two hundred sixty-six thousand, seven hundred twenty-eight".