612728 has 16 divisors (see below), whose sum is σ = 1157760. Its totient is φ = 304000.

The previous prime is 612727. The next prime is 612737. The reversal of 612728 is 827216.

612728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 612697 and 612706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (72360).

2⁶¹²⁷²⁸ is an apocalyptic number.

It is an amenable number.

612728 is a deficient number, since it is larger than the sum of its proper divisors (545032).

612728 is a wasteful number, since it uses less digits than its factorization.

612728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 594 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 612728 is about 782.7694424286. The cubic root of 612728 is about 84.9354989328.

The spelling of 612728 in words is "six hundred twelve thousand, seven hundred twenty-eight".