728124 has 24 divisors (see below), whose sum is σ = 1736448. Its totient is φ = 237360.

The previous prime is 728113. The next prime is 728129. The reversal of 728124 is 421827.

728124 = T₁₅₂ + T₁₅₃ + ... + T₁₉₈.

728124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 728094 and 728103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (72352).

2⁷²⁸¹²⁴ is an apocalyptic number.

It is an amenable number.

728124 is an abundant number, since it is smaller than the sum of its proper divisors (1008324).

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

728124 is a wasteful number, since it uses less digits than its factorization.

728124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1343 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 728124 is about 853.3018223349. The cubic root of 728124 is about 89.9639361681.

The spelling of 728124 in words is "seven hundred twenty-eight thousand, one hundred twenty-four".