72305162 has 4 divisors (see below), whose sum is σ = 108457746. Its totient is φ = 36152580.

The previous prime is 72305161. The next prime is 72305171. The reversal of 72305162 is 26150327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53129521 + 19175641 = 7289^2 + 4379^2 .

It is not an unprimeable number, because it can be changed into a prime (72305161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18076289 + ... + 18076292.

Almost surely, 2^72305162 is an apocalyptic number.

72305162 is a deficient number, since it is larger than the sum of its proper divisors (36152584).

72305162 is a wasteful number, since it uses less digits than its factorization.

72305162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36152583.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 72305162 is about 8503.2442044199. The cubic root of 72305162 is about 416.6036792965.

Adding to 72305162 its reverse (26150327), we get a palindrome (98455489).

The spelling of 72305162 in words is "seventy-two million, three hundred five thousand, one hundred sixty-two".