72284345 has 8 divisors (see below), whose sum is σ = 99132864. Its totient is φ = 49566384.

The previous prime is 72284321. The next prime is 72284363. The reversal of 72284345 is 54348227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72284345 - 2¹⁴ = 72267961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2065267 = 72284345 / (7 + 2 + 2 + 8 + 4 + 3 + 4 + 5).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032599 + ... + 1032668.

It is an arithmetic number, because the mean of its divisors is an integer number (12391608).

Almost surely, 2^72284345 is an apocalyptic number.

It is an amenable number.

72284345 is a deficient number, since it is larger than the sum of its proper divisors (26848519).

72284345 is a wasteful number, since it uses less digits than its factorization.

72284345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065279.

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

The square root of 72284345 is about 8502.0200540813. The cubic root of 72284345 is about 416.5636947321.

The spelling of 72284345 in words is "seventy-two million, two hundred eighty-four thousand, three hundred forty-five".