56899440 has 120 divisors (see below), whose sum is σ = 205820160. Its totient is φ = 14003712.

The previous prime is 56899439. The next prime is 56899481. The reversal of 56899440 is 4499865.

It is a happy number.

56899440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6321 + ... + 12399.

It is an arithmetic number, because the mean of its divisors is an integer number (1715168).

Almost surely, 2^56899440 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 56899440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102910080).

56899440 is an abundant number, since it is smaller than the sum of its proper divisors (148920720).

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

56899440 is a wasteful number, since it uses less digits than its factorization.

56899440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111 (or 6102 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 56899440 is about 7543.1717466859. The cubic root of 56899440 is about 384.6236610322.

It can be divided in two parts, 5689 and 9440, that added together give a square (15129 = 123²).

The spelling of 56899440 in words is "fifty-six million, eight hundred ninety-nine thousand, four hundred forty".