200406538 has 4 divisors (see below), whose sum is σ = 300609810. Its totient is φ = 100203268.

The previous prime is 200406529. The next prime is 200406587. The reversal of 200406538 is 835604002.

200406538 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 193682889 + 6723649 = 13917^2 + 2593^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50101633 + ... + 50101636.

Almost surely, 2^200406538 is an apocalyptic number.

200406538 is a deficient number, since it is larger than the sum of its proper divisors (100203272).

200406538 is a wasteful number, since it uses less digits than its factorization.

200406538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100203271.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 200406538 is about 14156.5016158654. The cubic root of 200406538 is about 585.1995209078.

The spelling of 200406538 in words is "two hundred million, four hundred six thousand, five hundred thirty-eight".