72283642 has 8 divisors (see below), whose sum is σ = 108530100. Its totient is φ = 36106944.

The previous prime is 72283639. The next prime is 72283663. The reversal of 72283642 is 24638227.

It can be written as a sum of positive squares in 2 ways, for example, as 72267001 + 16641 = 8501^2 + 129^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 72283598 and 72283607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14767 + ... + 19042.

Almost surely, 2^72283642 is an apocalyptic number.

72283642 is a deficient number, since it is larger than the sum of its proper divisors (36246458).

72283642 is a wasteful number, since it uses less digits than its factorization.

72283642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34880.

The product of its digits is 32256, while the sum is 34.

The square root of 72283642 is about 8501.9787108649. The cubic root of 72283642 is about 416.5623443004.

The spelling of 72283642 in words is "seventy-two million, two hundred eighty-three thousand, six hundred forty-two".