220520712 has 32 divisors (see below), whose sum is σ = 552185280. Its totient is φ = 73389120.

The previous prime is 220520693. The next prime is 220520717. The reversal of 220520712 is 217025022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220520717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8637 + ... + 22707.

It is an arithmetic number, because the mean of its divisors is an integer number (17255790).

Almost surely, 2^220520712 is an apocalyptic number.

It is an amenable number.

220520712 is an abundant number, since it is smaller than the sum of its proper divisors (331664568).

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

220520712 is a wasteful number, since it uses less digits than its factorization.

220520712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14733 (or 14729 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 220520712 is about 14849.9397978578. The cubic root of 220520712 is about 604.1569771658.

Adding to 220520712 its reverse (217025022), we get a palindrome (437545734).

The spelling of 220520712 in words is "two hundred twenty million, five hundred twenty thousand, seven hundred twelve".