728242 has 16 divisors (see below), whose sum is σ = 1143072. Its totient is φ = 347680.

The previous prime is 728209. The next prime is 728261. The reversal of 728242 is 242827.

728242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

728242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6753 + ... + 6859.

It is an arithmetic number, because the mean of its divisors is an integer number (71442).

2⁷²⁸²⁴² is an apocalyptic number.

728242 is a deficient number, since it is larger than the sum of its proper divisors (414830).

728242 is a wasteful number, since it uses less digits than its factorization.

728242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233.

The product of its digits is 1792, while the sum is 25.

The square root of 728242 is about 853.3709627120. The cubic root of 728242 is about 89.9687957667.

The spelling of 728242 in words is "seven hundred twenty-eight thousand, two hundred forty-two".