56420340 has 48 divisors (see below), whose sum is σ = 159062400. Its totient is φ = 14942080.

The previous prime is 56420339. The next prime is 56420347. The reversal of 56420340 is 4302465.

It is a self number, because there is not a number n which added to its sum of digits gives 56420340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5785 + ... + 12095.

It is an arithmetic number, because the mean of its divisors is an integer number (3313800).

Almost surely, 2^56420340 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 56420340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79531200).

56420340 is an abundant number, since it is smaller than the sum of its proper divisors (102642060).

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

56420340 is a wasteful number, since it uses less digits than its factorization.

56420340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472 (or 6470 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 56420340 is about 7511.3474157437. The cubic root of 56420340 is about 383.5410913283.

The spelling of 56420340 in words is "fifty-six million, four hundred twenty thousand, three hundred forty".