72283445 has 16 divisors (see below), whose sum is σ = 93985920. Its totient is φ = 53050944.

The previous prime is 72283433. The next prime is 72283481. The reversal of 72283445 is 54438227.

It is a cyclic number.

It is not a de Polignac number, because 72283445 - 2¹⁴ = 72267061 is a prime.

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, 7526 + ... + 14184.

It is an arithmetic number, because the mean of its divisors is an integer number (5874120).

Almost surely, 2^72283445 is an apocalyptic number.

It is an amenable number.

72283445 is a deficient number, since it is larger than the sum of its proper divisors (21702475).

72283445 is a wasteful number, since it uses less digits than its factorization.

72283445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844.

The product of its digits is 53760, while the sum is 35.

The square root of 72283445 is about 8501.9671253187. The cubic root of 72283445 is about 416.5619658706.

The spelling of 72283445 in words is "seventy-two million, two hundred eighty-three thousand, four hundred forty-five".