220033640 has 32 divisors (see below), whose sum is σ = 516602880. Its totient is φ = 84186432.

The previous prime is 220033637. The next prime is 220033657. The reversal of 220033640 is 46330022.

220033640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118664 + ... + 120503.

It is an arithmetic number, because the mean of its divisors is an integer number (16143840).

Almost surely, 2^220033640 is an apocalyptic number.

220033640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220033640 is an abundant number, since it is smaller than the sum of its proper divisors (296569240).

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

220033640 is a wasteful number, since it uses less digits than its factorization.

220033640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239201 (or 239197 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 220033640 is about 14833.5309350134. The cubic root of 220033640 is about 603.7118415530.

Adding to 220033640 its reverse (46330022), we get a palindrome (266363662).

The spelling of 220033640 in words is "two hundred twenty million, thirty-three thousand, six hundred forty".