220798464 has 80 divisors (see below), whose sum is σ = 602080512. Its totient is φ = 71866368.

The previous prime is 220798463. The next prime is 220798537. The reversal of 220798464 is 464897022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220798463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64377 + ... + 67719.

Almost surely, 2^220798464 is an apocalyptic number.

220798464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220798464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301040256).

220798464 is an abundant number, since it is smaller than the sum of its proper divisors (381282048).

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

220798464 is an equidigital number, since it uses as much as digits as its factorization.

220798464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 220798464 is about 14859.2888120529. The cubic root of 220798464 is about 604.4105216128.

The spelling of 220798464 in words is "two hundred twenty million, seven hundred ninety-eight thousand, four hundred sixty-four".