56228730 has 64 divisors (see below), whose sum is σ = 140894208. Its totient is φ = 14345280.

The previous prime is 56228723. The next prime is 56228747. The reversal of 56228730 is 3782265.

It is a super-3 number, since 3×56228730³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56228691 and 56228700.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95497 + ... + 96083.

It is an arithmetic number, because the mean of its divisors is an integer number (2201472).

Almost surely, 2^56228730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56228730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70447104).

56228730 is an abundant number, since it is smaller than the sum of its proper divisors (84665478).

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

56228730 is a wasteful number, since it uses less digits than its factorization.

56228730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 56228730 is about 7498.5818659264. The cubic root of 56228730 is about 383.1064155849.

It can be divided in two parts, 562 and 28730, that added together give a palindrome (29292).

The spelling of 56228730 in words is "fifty-six million, two hundred twenty-eight thousand, seven hundred thirty".