220045040 has 40 divisors (see below), whose sum is σ = 529251840. Its totient is φ = 84982016.

The previous prime is 220045003. The next prime is 220045057. The reversal of 220045040 is 40540022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 45104 + ... + 49743.

It is an arithmetic number, because the mean of its divisors is an integer number (13231296).

Almost surely, 2^220045040 is an apocalyptic number.

220045040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220045040 is an abundant number, since it is smaller than the sum of its proper divisors (309206800).

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

220045040 is a wasteful number, since it uses less digits than its factorization.

220045040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94889 (or 94883 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 220045040 is about 14833.9151945803. The cubic root of 220045040 is about 603.7222675287.

Adding to 220045040 its reverse (40540022), we get a palindrome (260585062).

The spelling of 220045040 in words is "two hundred twenty million, forty-five thousand, forty".