728620 has 24 divisors (see below), whose sum is σ = 1620864. Its totient is φ = 274176.

The previous prime is 728579. The next prime is 728627. The reversal of 728620 is 26827.

728620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (728627) 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, 732 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (67536).

2⁷²⁸⁶²⁰ is an apocalyptic number.

It is an amenable number.

728620 is an abundant number, since it is smaller than the sum of its proper divisors (892244).

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

728620 is a wasteful number, since it uses less digits than its factorization.

728620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 728620 is about 853.5924085885. The cubic root of 728620 is about 89.9843594220.

The spelling of 728620 in words is "seven hundred twenty-eight thousand, six hundred twenty".