23920056 has 128 divisors (see below), whose sum is σ = 70862400. Its totient is φ = 7464960.

The previous prime is 23920007. The next prime is 23920067. The reversal of 23920056 is 65002932.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327636 + ... + 327708.

Almost surely, 2^23920056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23920056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35431200).

23920056 is an abundant number, since it is smaller than the sum of its proper divisors (46942344).

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

23920056 is a wasteful number, since it uses less digits than its factorization.

23920056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 23920056 is about 4890.8134292774. The cubic root of 23920056 is about 288.1292822347.

Adding to 23920056 its reverse (65002932), we get a palindrome (88922988).

The spelling of 23920056 in words is "twenty-three million, nine hundred twenty thousand, fifty-six".