200306820 has 48 divisors (see below), whose sum is σ = 640983168. Its totient is φ = 45784320.

The previous prime is 200306807. The next prime is 200306831. The reversal of 200306820 is 28603002.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238041 + ... + 238880.

It is an arithmetic number, because the mean of its divisors is an integer number (13353816).

Almost surely, 2^200306820 is an apocalyptic number.

200306820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200306820 is an abundant number, since it is smaller than the sum of its proper divisors (440676348).

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

200306820 is a wasteful number, since it uses less digits than its factorization.

200306820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476940 (or 476938 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 200306820 is about 14152.9791916755. The cubic root of 200306820 is about 585.1024438899.

Adding to 200306820 its reverse (28603002), we get a palindrome (228909822).

The spelling of 200306820 in words is "two hundred million, three hundred six thousand, eight hundred twenty".