23251730 has 8 divisors (see below), whose sum is σ = 41853132. Its totient is φ = 9300688.

The previous prime is 23251727. The next prime is 23251751. The reversal of 23251730 is 3715232.

It can be written as a sum of positive squares in 2 ways, for example, as 22743361 + 508369 = 4769^2 + 713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23251696 and 23251705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162577 + ... + 1162596.

Almost surely, 2^23251730 is an apocalyptic number.

23251730 is a deficient number, since it is larger than the sum of its proper divisors (18601402).

23251730 is a wasteful number, since it uses less digits than its factorization.

23251730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325180.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 23251730 is about 4822.0047698027. The cubic root of 23251730 is about 285.4204525637.

Adding to 23251730 its reverse (3715232), we get a palindrome (26966962).

The spelling of 23251730 in words is "twenty-three million, two hundred fifty-one thousand, seven hundred thirty".