72300243 has 16 divisors (see below), whose sum is σ = 99386496. Its totient is φ = 46724160.

The previous prime is 72300229. The next prime is 72300251. The reversal of 72300243 is 34200327.

It is a happy number.

It is not a de Polignac number, because 72300243 - 2²⁰ = 71251667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72300743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15628 + ... + 19718.

It is an arithmetic number, because the mean of its divisors is an integer number (6211656).

Almost surely, 2^72300243 is an apocalyptic number.

72300243 is a deficient number, since it is larger than the sum of its proper divisors (27086253).

72300243 is a wasteful number, since it uses less digits than its factorization.

72300243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 72300243 is about 8502.9549569547. The cubic root of 72300243 is about 416.5942317461.

The spelling of 72300243 in words is "seventy-two million, three hundred thousand, two hundred forty-three".