200120440 has 32 divisors (see below), whose sum is σ = 484908480. Its totient is φ = 73890432.

The previous prime is 200120429. The next prime is 200120449. The reversal of 200120440 is 44021002.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 200120440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120449) 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, 191904 + ... + 192943.

It is an arithmetic number, because the mean of its divisors is an integer number (15153390).

Almost surely, 2^200120440 is an apocalyptic number.

200120440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200120440 is an abundant number, since it is smaller than the sum of its proper divisors (284788040).

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

200120440 is a wasteful number, since it uses less digits than its factorization.

200120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384871 (or 384867 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 200120440 is about 14146.3931798886. The cubic root of 200120440 is about 584.9209136519.

Adding to 200120440 its reverse (44021002), we get a palindrome (244141442).

The spelling of 200120440 in words is "two hundred million, one hundred twenty thousand, four hundred forty".