72033722 has 4 divisors (see below), whose sum is σ = 108050586. Its totient is φ = 36016860.

The previous prime is 72033721. The next prime is 72033733. The reversal of 72033722 is 22733027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22733027 = 103 ⋅220709.

It can be written as a sum of positive squares in only one way, i.e., 63027721 + 9006001 = 7939^2 + 3001^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72033691 and 72033700.

It is not an unprimeable number, because it can be changed into a prime (72033721) by changing a digit.

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, 18008429 + ... + 18008432.

Almost surely, 2^72033722 is an apocalyptic number.

72033722 is a deficient number, since it is larger than the sum of its proper divisors (36016864).

72033722 is a wasteful number, since it uses less digits than its factorization.

72033722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36016863.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 72033722 is about 8487.2682295306. The cubic root of 72033722 is about 416.0817031646.

Adding to 72033722 its reverse (22733027), we get a palindrome (94766749).

The spelling of 72033722 in words is "seventy-two million, thirty-three thousand, seven hundred twenty-two".