72972203 has 6 divisors (see below), whose sum is σ = 74233524. Its totient is φ = 71731964.

The previous prime is 72972157. The next prime is 72972209. The reversal of 72972203 is 30227927.

It is not a de Polignac number, because 72972203 - 2⁸ = 72971947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72972203.

It is not an unprimeable number, because it can be changed into a prime (72972209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7001 + ... + 13962.

It is an arithmetic number, because the mean of its divisors is an integer number (12372254).

Almost surely, 2^72972203 is an apocalyptic number.

72972203 is a deficient number, since it is larger than the sum of its proper divisors (1261321).

72972203 is an equidigital number, since it uses as much as digits as its factorization.

72972203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21081 (or 21022 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 72972203 is about 8542.3768940500. The cubic root of 72972203 is about 417.8808658298.

The spelling of 72972203 in words is "seventy-two million, nine hundred seventy-two thousand, two hundred three".