23721056 has 12 divisors (see below), whose sum is σ = 46700892. Its totient is φ = 11860512.

The previous prime is 23721023. The next prime is 23721067. The reversal of 23721056 is 65012732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370610 + ... + 370673.

It is an arithmetic number, because the mean of its divisors is an integer number (3891741).

Almost surely, 2^23721056 is an apocalyptic number.

It is an amenable number.

23721056 is a deficient number, since it is larger than the sum of its proper divisors (22979836).

23721056 is an equidigital number, since it uses as much as digits as its factorization.

23721056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741293 (or 741285 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 23721056 is about 4870.4266753540. The cubic root of 23721056 is about 287.3280373029.

Adding to 23721056 its reverse (65012732), we get a palindrome (88733788).

The spelling of 23721056 in words is "twenty-three million, seven hundred twenty-one thousand, fifty-six".