72205682 has 4 divisors (see below), whose sum is σ = 108308526. Its totient is φ = 36102840.

The previous prime is 72205673. The next prime is 72205697. The reversal of 72205682 is 28650227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28650227 = 859 ⋅33353.

It can be written as a sum of positive squares in only one way, i.e., 67749361 + 4456321 = 8231^2 + 2111^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18051419 + ... + 18051422.

Almost surely, 2^72205682 is an apocalyptic number.

72205682 is a deficient number, since it is larger than the sum of its proper divisors (36102844).

72205682 is a wasteful number, since it uses less digits than its factorization.

72205682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36102843.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 72205682 is about 8497.3926589278. The cubic root of 72205682 is about 416.4125322470.

The spelling of 72205682 in words is "seventy-two million, two hundred five thousand, six hundred eighty-two".