200820438 has 64 divisors (see below), whose sum is σ = 549265920. Its totient is φ = 52962336.

The previous prime is 200820437. The next prime is 200820461. The reversal of 200820438 is 834028002.

200820438 is a `hidden beast` number, since 200 + 8 + 20 + 438 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200820437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15520 + ... + 25347.

It is an arithmetic number, because the mean of its divisors is an integer number (8582280).

Almost surely, 2^200820438 is an apocalyptic number.

200820438 is an abundant number, since it is smaller than the sum of its proper divisors (348445482).

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

200820438 is a wasteful number, since it uses less digits than its factorization.

200820438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40898 (or 40892 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 200820438 is about 14171.1128003414. The cubic root of 200820438 is about 585.6021150992.

The spelling of 200820438 in words is "two hundred million, eight hundred twenty thousand, four hundred thirty-eight".