728367 has 4 divisors (see below), whose sum is σ = 971160. Its totient is φ = 485576.

The previous prime is 728333. The next prime is 728369. The reversal of 728367 is 763827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728367 - 2⁶ = 728303 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728369) 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, 121392 + ... + 121397.

It is an arithmetic number, because the mean of its divisors is an integer number (242790).

2⁷²⁸³⁶⁷ is an apocalyptic number.

728367 is a deficient number, since it is larger than the sum of its proper divisors (242793).

728367 is a wasteful number, since it uses less digits than its factorization.

728367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242792.

The product of its digits is 14112, while the sum is 33.

The square root of 728367 is about 853.4441985274. Note that the first 3 decimals coincide. The cubic root of 728367 is about 89.9739430740.

The spelling of 728367 in words is "seven hundred twenty-eight thousand, three hundred sixty-seven".