72904217000 has 32 divisors (see below), whose sum is σ = 170595870120. Its totient is φ = 29161686400.

The previous prime is 72904216999. The next prime is 72904217017. The reversal of 72904217000 is 71240927.

It can be written as a sum of positive squares in 4 ways, for example, as 2446885156 + 70457331844 = 49466^2 + 265438^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36451109 + ... + 36453108.

Almost surely, 2^72904217000 is an apocalyptic number.

It is an amenable number.

72904217000 is an abundant number, since it is smaller than the sum of its proper divisors (97691653120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72904217000 is a wasteful number, since it uses less digits than its factorization.

72904217000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72904238 (or 72904224 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

Adding to 72904217000 its reverse (71240927), we get a palindrome (72975457927).

The spelling of 72904217000 in words is "seventy-two billion, nine hundred four million, two hundred seventeen thousand".