56021028 has 48 divisors (see below), whose sum is σ = 149756544. Its totient is φ = 15966720.

The previous prime is 56021023. The next prime is 56021041. The reversal of 56021028 is 82012065.

It is a junction number, because it is equal to n+sod(n) for n = 56020989 and 56021007.

It is not an unprimeable number, because it can be changed into a prime (56021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63148 + ... + 64028.

It is an arithmetic number, because the mean of its divisors is an integer number (3119928).

Almost surely, 2^56021028 is an apocalyptic number.

It is an amenable number.

56021028 is an abundant number, since it is smaller than the sum of its proper divisors (93735516).

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

56021028 is a wasteful number, since it uses less digits than its factorization.

56021028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 56021028 is about 7484.7196340277. The cubic root of 56021028 is about 382.6341176058.

The spelling of 56021028 in words is "fifty-six million, twenty-one thousand, twenty-eight".