56728599 has 8 divisors (see below), whose sum is σ = 76307952. Its totient is φ = 37484160.

The previous prime is 56728579. The next prime is 56728613. The reversal of 56728599 is 99582765.

It is a happy number.

56728599 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 56728599 - 2¹³ = 56720407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56728579) by changing a digit.

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, 83332 + ... + 84009.

It is an arithmetic number, because the mean of its divisors is an integer number (9538494).

Almost surely, 2^56728599 is an apocalyptic number.

56728599 is a deficient number, since it is larger than the sum of its proper divisors (19579353).

56728599 is a wasteful number, since it uses less digits than its factorization.

56728599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167457.

The product of its digits is 1360800, while the sum is 51.

The square root of 56728599 is about 7531.8390184602. The cubic root of 56728599 is about 384.2383299685.

The spelling of 56728599 in words is "fifty-six million, seven hundred twenty-eight thousand, five hundred ninety-nine".