220973648 has 40 divisors (see below), whose sum is σ = 515056320. Its totient is φ = 89717760.

The previous prime is 220973617. The next prime is 220973651. The reversal of 220973648 is 846379022.

It is a happy number.

It is a super-2 number, since 2×220973648² = 97658706220855808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 49793 + ... + 54048.

It is an arithmetic number, because the mean of its divisors is an integer number (12876408).

Almost surely, 2^220973648 is an apocalyptic number.

220973648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220973648 is an abundant number, since it is smaller than the sum of its proper divisors (294082672).

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

220973648 is a wasteful number, since it uses less digits than its factorization.

220973648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103875 (or 103869 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 220973648 is about 14865.1824072226. The cubic root of 220973648 is about 604.5703280721.

It can be divided in two parts, 2209 and 73648, that added together give a palindrome (75857).

The spelling of 220973648 in words is "two hundred twenty million, nine hundred seventy-three thousand, six hundred forty-eight".