56440412 has 48 divisors (see below), whose sum is σ = 119562240. Its totient is φ = 22773312.

The previous prime is 56440411. The next prime is 56440421. The reversal of 56440412 is 21404465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56440411) 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, 147173 + ... + 147555.

It is an arithmetic number, because the mean of its divisors is an integer number (2490880).

Almost surely, 2^56440412 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 56440412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59781120).

56440412 is an abundant number, since it is smaller than the sum of its proper divisors (63121828).

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

56440412 is a wasteful number, since it uses less digits than its factorization.

56440412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 56440412 is about 7512.6834087428. The cubic root of 56440412 is about 383.5865685683.

Adding to 56440412 its reverse (21404465), we get a palindrome (77844877).

The spelling of 56440412 in words is "fifty-six million, four hundred forty thousand, four hundred twelve".