202404406 has 8 divisors (see below), whose sum is σ = 304482600. Its totient is φ = 100910208.

The previous prime is 202404383. The next prime is 202404409. The reversal of 202404406 is 604404202.

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 (202404409) by changing a digit.

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, 145131 + ... + 146518.

It is an arithmetic number, because the mean of its divisors is an integer number (38060325).

Almost surely, 2^202404406 is an apocalyptic number.

202404406 is a deficient number, since it is larger than the sum of its proper divisors (102078194).

202404406 is a wasteful number, since it uses less digits than its factorization.

202404406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291998.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 202404406 is about 14226.8902434791. The cubic root of 202404406 is about 587.1377272219.

Adding to 202404406 its reverse (604404202), we get a palindrome (806808608).

The spelling of 202404406 in words is "two hundred two million, four hundred four thousand, four hundred six".