72170002 has 16 divisors (see below), whose sum is σ = 109734912. Its totient is φ = 35594800.

The previous prime is 72169987. The next prime is 72170029. The reversal of 72170002 is 20007127.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 62127 + ... + 63277.

It is an arithmetic number, because the mean of its divisors is an integer number (6858432).

Almost surely, 2^72170002 is an apocalyptic number.

72170002 is a deficient number, since it is larger than the sum of its proper divisors (37564910).

72170002 is a wasteful number, since it uses less digits than its factorization.

72170002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 72170002 is about 8495.2929319712. The cubic root of 72170002 is about 416.3439317035.

Adding to 72170002 its reverse (20007127), we get a palindrome (92177129).

The spelling of 72170002 in words is "seventy-two million, one hundred seventy thousand, two".