72824245 has 16 divisors (see below), whose sum is σ = 99066240. Its totient is φ = 50946624.

The previous prime is 72824221. The next prime is 72824261. The reversal of 72824245 is 54242827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72824245 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72824245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28249 + ... + 30718.

It is an arithmetic number, because the mean of its divisors is an integer number (6191640).

Almost surely, 2^72824245 is an apocalyptic number.

It is an amenable number.

72824245 is a deficient number, since it is larger than the sum of its proper divisors (26241995).

72824245 is a wasteful number, since it uses less digits than its factorization.

72824245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59004.

The product of its digits is 35840, while the sum is 34.

The square root of 72824245 is about 8533.7122637220. The cubic root of 72824245 is about 417.5982438192.

The spelling of 72824245 in words is "seventy-two million, eight hundred twenty-four thousand, two hundred forty-five".