220000072 has 16 divisors (see below), whose sum is σ = 414576000. Its totient is φ = 109446480.

The previous prime is 220000051. The next prime is 220000073. The reversal of 220000072 is 270000022.

It is not an unprimeable number, because it can be changed into a prime (220000073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67504 + ... + 70687.

It is an arithmetic number, because the mean of its divisors is an integer number (25911000).

Almost surely, 2^220000072 is an apocalyptic number.

It is an amenable number.

220000072 is a deficient number, since it is larger than the sum of its proper divisors (194575928).

220000072 is a wasteful number, since it uses less digits than its factorization.

220000072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138396 (or 138392 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 220000072 is about 14832.3994013106. The cubic root of 220000072 is about 603.6811395359.

Adding to 220000072 its reverse (270000022), we get a palindrome (490000094).

The spelling of 220000072 in words is "two hundred twenty million, seventy-two", and thus it is an aban number.