220689448 has 32 divisors (see below), whose sum is σ = 477509760. Its totient is φ = 93660480.

The previous prime is 220689437. The next prime is 220689457. The reversal of 220689448 is 844986022.

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, 13363 + ... + 24898.

It is an arithmetic number, because the mean of its divisors is an integer number (14922180).

Almost surely, 2^220689448 is an apocalyptic number.

220689448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220689448 is an abundant number, since it is smaller than the sum of its proper divisors (256820312).

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

220689448 is a wasteful number, since it uses less digits than its factorization.

220689448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38377 (or 38373 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 220689448 is about 14855.6200813026. The cubic root of 220689448 is about 604.3110322967.

The spelling of 220689448 in words is "two hundred twenty million, six hundred eighty-nine thousand, four hundred forty-eight".