220816854 has 40 divisors (see below), whose sum is σ = 497716560. Its totient is φ = 73170864.

The previous prime is 220816847. The next prime is 220816861. The reversal of 220816854 is 458618022.

It is an interprime number because it is at equal distance from previous prime (220816847) and next prime (220816861).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24087 + ... + 31965.

It is an arithmetic number, because the mean of its divisors is an integer number (12442914).

Almost surely, 2^220816854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220816854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248858280).

220816854 is an abundant number, since it is smaller than the sum of its proper divisors (276899706).

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

220816854 is a wasteful number, since it uses less digits than its factorization.

220816854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8066 (or 8057 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 220816854 is about 14859.9076040196. The cubic root of 220816854 is about 604.4273013203.

The spelling of 220816854 in words is "two hundred twenty million, eight hundred sixteen thousand, eight hundred fifty-four".