220035440 has 40 divisors (see below), whose sum is σ = 514269168. Its totient is φ = 87552000.

The previous prime is 220035419. The next prime is 220035449. The reversal of 220035440 is 44530022.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220035449) 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, 8315 + ... + 22565.

Almost surely, 2^220035440 is an apocalyptic number.

220035440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220035440 is an abundant number, since it is smaller than the sum of its proper divisors (294233728).

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

220035440 is a wasteful number, since it uses less digits than its factorization.

220035440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14457 (or 14451 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 220035440 is about 14833.5916082384. The cubic root of 220035440 is about 603.7134877836.

Adding to 220035440 its reverse (44530022), we get a palindrome (264565462).

The spelling of 220035440 in words is "two hundred twenty million, thirty-five thousand, four hundred forty".