56448636 has 72 divisors (see below), whose sum is σ = 143690736. Its totient is φ = 17233920.

The previous prime is 56448617. The next prime is 56448641. The reversal of 56448636 is 63684465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141990 + ... + 142386.

Almost surely, 2^56448636 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 56448636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71845368).

56448636 is an abundant number, since it is smaller than the sum of its proper divisors (87242100).

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

56448636 is a wasteful number, since it uses less digits than its factorization.

56448636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 460 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 56448636 is about 7513.2307298525. The cubic root of 56448636 is about 383.6051986162.

The spelling of 56448636 in words is "fifty-six million, four hundred forty-eight thousand, six hundred thirty-six".