72007130 has 16 divisors (see below), whose sum is σ = 139583304. Its totient is φ = 26587200.

The previous prime is 72007129. The next prime is 72007147. The reversal of 72007130 is 3170027.

It can be written as a sum of positive squares in 4 ways, for example, as 48455521 + 23551609 = 6961^2 + 4853^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276821 + ... + 277080.

Almost surely, 2^72007130 is an apocalyptic number.

72007130 is a deficient number, since it is larger than the sum of its proper divisors (67576174).

72007130 is a wasteful number, since it uses less digits than its factorization.

72007130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553921.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 72007130 is about 8485.7015031169. The cubic root of 72007130 is about 416.0304965623.

Adding to 72007130 its reverse (3170027), we get a palindrome (75177157).

The spelling of 72007130 in words is "seventy-two million, seven thousand, one hundred thirty".