72881162 has 4 divisors (see below), whose sum is σ = 109321746. Its totient is φ = 36440580.

The previous prime is 72881143. The next prime is 72881167. The reversal of 72881162 is 26118827.

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., 53158681 + 19722481 = 7291^2 + 4441^2 .

It is not an unprimeable number, because it can be changed into a prime (72881167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18220289 + ... + 18220292.

Almost surely, 2^72881162 is an apocalyptic number.

72881162 is a deficient number, since it is larger than the sum of its proper divisors (36440584).

72881162 is a wasteful number, since it uses less digits than its factorization.

72881162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36440583.

The product of its digits is 10752, while the sum is 35.

The square root of 72881162 is about 8537.0464447606. The cubic root of 72881162 is about 417.7070091062.

Adding to 72881162 its reverse (26118827), we get a palindrome (98999989).

The spelling of 72881162 in words is "seventy-two million, eight hundred eighty-one thousand, one hundred sixty-two".