220681512 has 48 divisors (see below), whose sum is σ = 598366080. Its totient is φ = 73476000.

The previous prime is 220681511. The next prime is 220681537. The reversal of 220681512 is 215186022.

It is a happy number.

It is a super-2 number, since 2×220681512² = 97400659477212288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220681511) 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 11 ways as a sum of consecutive naturals, for example, 112137 + ... + 114087.

It is an arithmetic number, because the mean of its divisors is an integer number (12465960).

Almost surely, 2^220681512 is an apocalyptic number.

It is an amenable number.

220681512 is an abundant number, since it is smaller than the sum of its proper divisors (377684568).

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

220681512 is a wasteful number, since it uses less digits than its factorization.

220681512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 220681512 is about 14855.3529746014. The cubic root of 220681512 is about 604.3037885282.

The spelling of 220681512 in words is "two hundred twenty million, six hundred eighty-one thousand, five hundred twelve".