23684530 has 16 divisors (see below), whose sum is σ = 42698520. Its totient is φ = 9459072.

The previous prime is 23684497. The next prime is 23684537. The reversal of 23684530 is 3548632.

It can be written as a sum of positive squares in 4 ways, for example, as 21095649 + 2588881 = 4593^2 + 1609^2 .

It is a super-2 number, since 2×23684530² = 1121913922641800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23684492 and 23684501.

It is not an unprimeable number, because it can be changed into a prime (23684537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6862 + ... + 9718.

Almost surely, 2^23684530 is an apocalyptic number.

23684530 is a deficient number, since it is larger than the sum of its proper divisors (19013990).

23684530 is a wasteful number, since it uses less digits than its factorization.

23684530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 23684530 is about 4866.6754566131. The cubic root of 23684530 is about 287.1804843545.

The spelling of 23684530 in words is "twenty-three million, six hundred eighty-four thousand, five hundred thirty".