56342440 has 96 divisors (see below), whose sum is σ = 159344640. Its totient is φ = 17550720.

The previous prime is 56342431. The next prime is 56342441. The reversal of 56342440 is 4424365.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 56342399 and 56342408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56342441) 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, 33049 + ... + 34711.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 2^56342440 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 56342440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79672320).

56342440 is an abundant number, since it is smaller than the sum of its proper divisors (103002200).

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

56342440 is a wasteful number, since it uses less digits than its factorization.

56342440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1688 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 56342440 is about 7506.1601368476. The cubic root of 56342440 is about 383.3644906412.

The spelling of 56342440 in words is "fifty-six million, three hundred forty-two thousand, four hundred forty".