72242005 has 16 divisors (see below), whose sum is σ = 94737600. Its totient is φ = 52447360.

The previous prime is 72241991. The next prime is 72242033. The reversal of 72242005 is 50024227.

It is not a de Polignac number, because 72242005 - 2⁹ = 72241493 is a prime.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 55401 + ... + 56689.

It is an arithmetic number, because the mean of its divisors is an integer number (5921100).

Almost surely, 2^72242005 is an apocalyptic number.

It is an amenable number.

72242005 is a deficient number, since it is larger than the sum of its proper divisors (22495595).

72242005 is a wasteful number, since it uses less digits than its factorization.

72242005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 72242005 is about 8499.5296928712. The cubic root of 72242005 is about 416.4823458518.

It can be divided in two parts, 7224 and 2005, that added together give a palindrome (9229).

The spelling of 72242005 in words is "seventy-two million, two hundred forty-two thousand, five".