72882813 has 4 divisors (see below), whose sum is σ = 97177088. Its totient is φ = 48588540.

The previous prime is 72882809. The next prime is 72882833. The reversal of 72882813 is 31828827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72882813 - 2² = 72882809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72882833) 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 in 3 ways as a sum of consecutive naturals, for example, 12147133 + ... + 12147138.

It is an arithmetic number, because the mean of its divisors is an integer number (24294272).

Almost surely, 2^72882813 is an apocalyptic number.

It is an amenable number.

72882813 is a deficient number, since it is larger than the sum of its proper divisors (24294275).

72882813 is a wasteful number, since it uses less digits than its factorization.

72882813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24294274.

The product of its digits is 43008, while the sum is 39.

The square root of 72882813 is about 8537.1431404188. The cubic root of 72882813 is about 417.7101632320.

It can be divided in two parts, 7288 and 2813, that added together give a palindrome (10101).

The spelling of 72882813 in words is "seventy-two million, eight hundred eighty-two thousand, eight hundred thirteen".