72281203 has 4 divisors (see below), whose sum is σ = 75423888. Its totient is φ = 69138520.

The previous prime is 72281189. The next prime is 72281221. The reversal of 72281203 is 30218227.

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 72281203 - 2¹⁷ = 72150131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72281233) 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, 1571308 + ... + 1571353.

It is an arithmetic number, because the mean of its divisors is an integer number (18855972).

Almost surely, 2^72281203 is an apocalyptic number.

72281203 is a deficient number, since it is larger than the sum of its proper divisors (3142685).

72281203 is a wasteful number, since it uses less digits than its factorization.

72281203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142684.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 72281203 is about 8501.8352724574. The cubic root of 72281203 is about 416.5576590219.

The spelling of 72281203 in words is "seventy-two million, two hundred eighty-one thousand, two hundred three".