72216130 has 32 divisors (see below), whose sum is σ = 148855680. Its totient is φ = 24710400.

The previous prime is 72216103. The next prime is 72216139. The reversal of 72216130 is 3161227.

It is not an unprimeable number, because it can be changed into a prime (72216139) 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 15 ways as a sum of consecutive naturals, for example, 59530 + ... + 60730.

It is an arithmetic number, because the mean of its divisors is an integer number (4651740).

Almost surely, 2^72216130 is an apocalyptic number.

72216130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72216130 is an abundant number, since it is smaller than the sum of its proper divisors (76639550).

72216130 is a wasteful number, since it uses less digits than its factorization.

72216130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 72216130 is about 8498.0074135058. The cubic root of 72216130 is about 416.4326159310.

Adding to 72216130 its reverse (3161227), we get a palindrome (75377357).

The spelling of 72216130 in words is "seventy-two million, two hundred sixteen thousand, one hundred thirty".