340240404 has 24 divisors (see below), whose sum is σ = 907307968. Its totient is φ = 97211520.

The previous prime is 340240399. The next prime is 340240423. The reversal of 340240404 is 404042043.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 7 ways as a sum of consecutive naturals, for example, 2025157 + ... + 2025324.

Almost surely, 2^340240404 is an apocalyptic number.

It is an amenable number.

340240404 is an abundant number, since it is smaller than the sum of its proper divisors (567067564).

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

340240404 is a wasteful number, since it uses less digits than its factorization.

340240404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050495 (or 4050493 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 340240404 is about 18445.6066313906. The cubic root of 340240404 is about 698.1176666626.

Adding to 340240404 its reverse (404042043), we get a palindrome (744282447).

The spelling of 340240404 in words is "three hundred forty million, two hundred forty thousand, four hundred four".