56447244 has 72 divisors (see below), whose sum is σ = 170177280. Its totient is φ = 15424992.

The previous prime is 56447243. The next prime is 56447257. The reversal of 56447244 is 44274465.

56447244 is a `hidden beast` number, since 5 + 644 + 7 + 2 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56447199 and 56447208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56447243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 927 + ... + 10665.

Almost surely, 2^56447244 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 56447244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85088640).

56447244 is an abundant number, since it is smaller than the sum of its proper divisors (113730036).

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

56447244 is a wasteful number, since it uses less digits than its factorization.

56447244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779 (or 9774 counting only the distinct ones).

The product of its digits is 107520, while the sum is 36.

The square root of 56447244 is about 7513.1380927013. The cubic root of 56447244 is about 383.6020454085.

The spelling of 56447244 in words is "fifty-six million, four hundred forty-seven thousand, two hundred forty-four".