340404040 has 64 divisors (see below), whose sum is σ = 787449600. Its totient is φ = 132384768.

The previous prime is 340404011. The next prime is 340404047. The reversal of 340404040 is 40404043.

It is a junction number, because it is equal to n+sod(n) for n = 340403999 and 340404017.

It is not an unprimeable number, because it can be changed into a prime (340404047) 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 15 ways as a sum of consecutive naturals, for example, 228177 + ... + 229663.

It is an arithmetic number, because the mean of its divisors is an integer number (12303900).

Almost surely, 2^340404040 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 340404040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393724800).

340404040 is an abundant number, since it is smaller than the sum of its proper divisors (447045560).

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

340404040 is a wasteful number, since it uses less digits than its factorization.

340404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 340404040 is about 18450.0417343701. The cubic root of 340404040 is about 698.2295668291.

Adding to 340404040 its reverse (40404043), we get a palindrome (380808083).

It can be divided in two parts, 340 and 404040, that multiplied together give a triangular number (137373600 = T₁₆₅₇₅).

The spelling of 340404040 in words is "three hundred forty million, four hundred four thousand, forty".