56473440 has 96 divisors (see below), whose sum is σ = 184070880. Its totient is φ = 14536704.

The previous prime is 56473427. The next prime is 56473447. The reversal of 56473440 is 4437465.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56473447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11892 + ... + 15948.

It is an arithmetic number, because the mean of its divisors is an integer number (1917405).

Almost surely, 2^56473440 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 56473440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92035440).

56473440 is an abundant number, since it is smaller than the sum of its proper divisors (127597440).

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

56473440 is a wasteful number, since it uses less digits than its factorization.

56473440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104 (or 4096 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 56473440 is about 7514.8812365865. The cubic root of 56473440 is about 383.6613768265.

The spelling of 56473440 in words is "fifty-six million, four hundred seventy-three thousand, four hundred forty".