204987406 has 8 divisors (see below), whose sum is σ = 331133544. Its totient is φ = 94609560.

The previous prime is 204987403. The next prime is 204987439. The reversal of 204987406 is 604789402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204987401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3942040 + ... + 3942091.

It is an arithmetic number, because the mean of its divisors is an integer number (41391693).

Almost surely, 2^204987406 is an apocalyptic number.

204987406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

204987406 is a deficient number, since it is larger than the sum of its proper divisors (126146138).

204987406 is a wasteful number, since it uses less digits than its factorization.

204987406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7884146.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 204987406 is about 14317.3812549642. The cubic root of 204987406 is about 589.6247791375.

The spelling of 204987406 in words is "two hundred four million, nine hundred eighty-seven thousand, four hundred six".