200305640 has 32 divisors (see below), whose sum is σ = 451694880. Its totient is φ = 79943232.

The previous prime is 200305627. The next prime is 200305667. The reversal of 200305640 is 46503002.

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, 13319 + ... + 24041.

It is an arithmetic number, because the mean of its divisors is an integer number (14115465).

Almost surely, 2^200305640 is an apocalyptic number.

200305640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200305640 is an abundant number, since it is smaller than the sum of its proper divisors (251389240).

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

200305640 is a wasteful number, since it uses less digits than its factorization.

200305640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11201 (or 11197 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 200305640 is about 14152.9375042780. The cubic root of 200305640 is about 585.1012949487.

Adding to 200305640 its reverse (46503002), we get a palindrome (246808642).

The spelling of 200305640 in words is "two hundred million, three hundred five thousand, six hundred forty".