72273 has 4 divisors (see below), whose sum is σ = 96368. Its totient is φ = 48180.

The previous prime is 72271. The next prime is 72277. The reversal of 72273 is 37227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37227 = 3 ⋅12409.

It is not a de Polignac number, because 72273 - 2¹ = 72271 is a prime.

It is a D-number.

It is a Duffinian number.

72273 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (72271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12043 + ... + 12048.

It is an arithmetic number, because the mean of its divisors is an integer number (24092).

2⁷²²⁷³ is an apocalyptic number.

It is an amenable number.

72273 is a deficient number, since it is larger than the sum of its proper divisors (24095).

72273 is a wasteful number, since it uses less digits than its factorization.

72273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24094.

The product of its digits is 588, while the sum is 21.

The square root of 72273 is about 268.8363814665. The cubic root of 72273 is about 41.6541900422.

The spelling of 72273 in words is "seventy-two thousand, two hundred seventy-three", and thus it is an iban number.