56728265 has 8 divisors (see below), whose sum is σ = 74262528. Its totient is φ = 41256880.

The previous prime is 56728253. The next prime is 56728271. The reversal of 56728265 is 56282765.

56728265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56728265 - 2⁴ = 56728249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515657 + ... + 515766.

It is an arithmetic number, because the mean of its divisors is an integer number (9282816).

Almost surely, 2^56728265 is an apocalyptic number.

56728265 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56728265 is a deficient number, since it is larger than the sum of its proper divisors (17534263).

56728265 is a wasteful number, since it uses less digits than its factorization.

56728265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031439.

The product of its digits is 201600, while the sum is 41.

The square root of 56728265 is about 7531.8168458878. The cubic root of 56728265 is about 384.2375758759.

The spelling of 56728265 in words is "fifty-six million, seven hundred twenty-eight thousand, two hundred sixty-five".