23561730 has 48 divisors (see below), whose sum is σ = 61509240. Its totient is φ = 6257664.

The previous prime is 23561723. The next prime is 23561749. The reversal of 23561730 is 3716532.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13995081 + 9566649 = 3741^2 + 3093^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23561694 and 23561703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34674 + ... + 35346.

Almost surely, 2^23561730 is an apocalyptic number.

23561730 is an abundant number, since it is smaller than the sum of its proper divisors (37947510).

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

23561730 is a wasteful number, since it uses less digits than its factorization.

23561730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 23561730 is about 4854.0426450537. The cubic root of 23561730 is about 286.6832978152.

The spelling of 23561730 in words is "twenty-three million, five hundred sixty-one thousand, seven hundred thirty".