72273203 has 4 divisors (see below), whose sum is σ = 72291960. Its totient is φ = 72254448.

The previous prime is 72273167. The next prime is 72273209. The reversal of 72273203 is 30237227.

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 72273203 - 2⁸ = 72272947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72273209) 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, 1250 + ... + 12087.

It is an arithmetic number, because the mean of its divisors is an integer number (18072990).

Almost surely, 2^72273203 is an apocalyptic number.

72273203 is a deficient number, since it is larger than the sum of its proper divisors (18757).

72273203 is a wasteful number, since it uses less digits than its factorization.

72273203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18756.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 72273203 is about 8501.3647727880. The cubic root of 72273203 is about 416.5422904148.

The spelling of 72273203 in words is "seventy-two million, two hundred seventy-three thousand, two hundred three".