56428 has 6 divisors (see below), whose sum is σ = 98756. Its totient is φ = 28212.

The previous prime is 56417. The next prime is 56431. The reversal of 56428 is 82465.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7050 + ... + 7057.

2⁵⁶⁴²⁸ is an apocalyptic number.

It is an amenable number.

56428 is a deficient number, since it is larger than the sum of its proper divisors (42328).

56428 is a wasteful number, since it uses less digits than its factorization.

56428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14111 (or 14109 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 56428 is about 237.5457850605. The cubic root of 56428 is about 38.3558447905.

It can be divided in two parts, 56 and 428, that added together give a palindrome (484).

The spelling of 56428 in words is "fifty-six thousand, four hundred twenty-eight".