220530986 has 32 divisors (see below), whose sum is σ = 382112640. Its totient is φ = 94595904.

The previous prime is 220530983. The next prime is 220530997. The reversal of 220530986 is 689035022.

It is a super-2 number, since 2×220530986² = 97267831572264392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220530983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21971 + ... + 30393.

It is an arithmetic number, because the mean of its divisors is an integer number (11941020).

Almost surely, 2^220530986 is an apocalyptic number.

220530986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

220530986 is a deficient number, since it is larger than the sum of its proper divisors (161581654).

220530986 is a wasteful number, since it uses less digits than its factorization.

220530986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8510.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 220530986 is about 14850.2857211570. The cubic root of 220530986 is about 604.1663595232.

The spelling of 220530986 in words is "two hundred twenty million, five hundred thirty thousand, nine hundred eighty-six".