56098440 has 128 divisors (see below), whose sum is σ = 188928000. Its totient is φ = 14805504.

The previous prime is 56098429. The next prime is 56098447. The reversal of 56098440 is 4489065.

56098440 is a `hidden beast` number, since 5 + 609 + 8 + 4 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56098395 and 56098404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56098447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136956 + ... + 137364.

It is an arithmetic number, because the mean of its divisors is an integer number (1476000).

Almost surely, 2^56098440 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 56098440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94464000).

56098440 is an abundant number, since it is smaller than the sum of its proper divisors (132829560).

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

56098440 is a wasteful number, since it uses less digits than its factorization.

56098440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 56098440 is about 7489.8891847610. The cubic root of 56098440 is about 382.8102826416.

The spelling of 56098440 in words is "fifty-six million, ninety-eight thousand, four hundred forty".