23181648 has 40 divisors (see below), whose sum is σ = 68442048. Its totient is φ = 6623232.

The previous prime is 23181623. The next prime is 23181667. The reversal of 23181648 is 84618132.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 34161 + ... + 34832.

Almost surely, 2^23181648 is an apocalyptic number.

23181648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23181648 is an abundant number, since it is smaller than the sum of its proper divisors (45260400).

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

23181648 is a wasteful number, since it uses less digits than its factorization.

23181648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69011 (or 69005 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 23181648 is about 4814.7323913173. The cubic root of 23181648 is about 285.1334063034.

The spelling of 23181648 in words is "twenty-three million, one hundred eighty-one thousand, six hundred forty-eight".