201340404 has 60 divisors (see below), whose sum is σ = 532756224. Its totient is φ = 66296016.

The previous prime is 201340387. The next prime is 201340429. The reversal of 201340404 is 404043102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 23149 + ... + 30635.

Almost surely, 2^201340404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201340404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266378112).

201340404 is an abundant number, since it is smaller than the sum of its proper divisors (331415820).

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

201340404 is a wasteful number, since it uses less digits than its factorization.

201340404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586 (or 7575 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 201340404 is about 14189.4469236824. The cubic root of 201340404 is about 586.1070948562.

Adding to 201340404 its reverse (404043102), we get a palindrome (605383506).

The spelling of 201340404 in words is "two hundred one million, three hundred forty thousand, four hundred four".