72618203 has 16 divisors (see below), whose sum is σ = 89372160. Its totient is φ = 57584256.

The previous prime is 72618181. The next prime is 72618223. The reversal of 72618203 is 30281627.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 72618203 - 2⁸ = 72617947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72618223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1850 + ... + 12192.

It is an arithmetic number, because the mean of its divisors is an integer number (5585760).

Almost surely, 2^72618203 is an apocalyptic number.

72618203 is a deficient number, since it is larger than the sum of its proper divisors (16753957).

72618203 is a wasteful number, since it uses less digits than its factorization.

72618203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10426.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72618203 is about 8521.6314752517. The cubic root of 72618203 is about 417.2040342066.

The spelling of 72618203 in words is "seventy-two million, six hundred eighteen thousand, two hundred three".