72803 has 4 divisors (see below), whose sum is σ = 74400. Its totient is φ = 71208.

The previous prime is 72797. The next prime is 72817. The reversal of 72803 is 30827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30827 = 29 ⋅1063.

It is a cyclic number.

It is not a de Polignac number, because 72803 - 2⁶ = 72739 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (72823) 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, 728 + ... + 821.

It is an arithmetic number, because the mean of its divisors is an integer number (18600).

2⁷²⁸⁰³ is an apocalyptic number.

72803 is a deficient number, since it is larger than the sum of its proper divisors (1597).

72803 is a wasteful number, since it uses less digits than its factorization.

72803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 72803 is about 269.8203105772. The cubic root of 72803 is about 41.7557631257.

The spelling of 72803 in words is "seventy-two thousand, eight hundred three".