56491428 has 48 divisors (see below), whose sum is σ = 153498240. Its totient is φ = 15834624.

The previous prime is 56491417. The next prime is 56491441. The reversal of 56491428 is 82419465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1893 + ... + 10796.

It is an arithmetic number, because the mean of its divisors is an integer number (3197880).

Almost surely, 2^56491428 is an apocalyptic number.

It is an amenable number.

56491428 is an abundant number, since it is smaller than the sum of its proper divisors (97006812).

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

56491428 is a wasteful number, since it uses less digits than its factorization.

56491428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12756 (or 12754 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 56491428 is about 7516.0779665993. The cubic root of 56491428 is about 383.7021072905.

The spelling of 56491428 in words is "fifty-six million, four hundred ninety-one thousand, four hundred twenty-eight".