200540720 has 20 divisors (see below), whose sum is σ = 466257360. Its totient is φ = 80216256.

The previous prime is 200540719. The next prime is 200540731. The reversal of 200540720 is 27045002.

It is a tau number, because it is divible by the number of its divisors (20).

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

It is a junction number, because it is equal to n+sod(n) for n = 200540692 and 200540701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253300 + ... + 1253459.

It is an arithmetic number, because the mean of its divisors is an integer number (23312868).

Almost surely, 2^200540720 is an apocalyptic number.

200540720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200540720 is an abundant number, since it is smaller than the sum of its proper divisors (265716640).

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

200540720 is a wasteful number, since it uses less digits than its factorization.

200540720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506772 (or 2506766 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 200540720 is about 14161.2400586954. The cubic root of 200540720 is about 585.3300983569.

Adding to 200540720 its reverse (27045002), we get a palindrome (227585722).

The spelling of 200540720 in words is "two hundred million, five hundred forty thousand, seven hundred twenty".