23684481 has 28 divisors (see below), whose sum is σ = 36239508. Its totient is φ = 15466464.

The previous prime is 23684473. The next prime is 23684483. The reversal of 23684481 is 18448632.

It can be written as a sum of positive squares in 2 ways, for example, as 6170256 + 17514225 = 2484^2 + 4185^2 .

It is not a de Polignac number, because 23684481 - 2³ = 23684473 is a prime.

It is a super-2 number, since 2×23684481² = 1121909280478722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23684483) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 38331 + ... + 38943.

Almost surely, 2^23684481 is an apocalyptic number.

It is an amenable number.

23684481 is a deficient number, since it is larger than the sum of its proper divisors (12555027).

23684481 is an frugal number, since it uses more digits than its factorization.

23684481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 669 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 23684481 is about 4866.6704223730. The cubic root of 23684481 is about 287.1802863089.

The spelling of 23684481 in words is "twenty-three million, six hundred eighty-four thousand, four hundred eighty-one".