72453243 has 16 divisors (see below), whose sum is σ = 101030400. Its totient is φ = 46098624.

The previous prime is 72453233. The next prime is 72453247. The reversal of 72453243 is 34235427.

It is not a de Polignac number, because 72453243 - 2⁵ = 72453211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72453243.

It is not an unprimeable number, because it can be changed into a prime (72453247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40455 + ... + 42207.

It is an arithmetic number, because the mean of its divisors is an integer number (6314400).

Almost surely, 2^72453243 is an apocalyptic number.

72453243 is a deficient number, since it is larger than the sum of its proper divisors (28577157).

72453243 is a wasteful number, since it uses less digits than its factorization.

72453243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378.

The product of its digits is 20160, while the sum is 30.

The square root of 72453243 is about 8511.9470745535. The cubic root of 72453243 is about 416.8878868649.

The spelling of 72453243 in words is "seventy-two million, four hundred fifty-three thousand, two hundred forty-three".