340404014440 has 128 divisors (see below), whose sum is σ = 921687264000. Its totient is φ = 110532169728.

The previous prime is 340404014399. The next prime is 340404014471. The reversal of 340404014440 is 44410404043.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 340404014399 and 340404014408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20681254 + ... + 20697706.

It is an arithmetic number, because the mean of its divisors is an integer number (7200681750).

Almost surely, 2^340404014440 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 340404014440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460843632000).

340404014440 is an abundant number, since it is smaller than the sum of its proper divisors (581283249560).

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

340404014440 is a wasteful number, since it uses less digits than its factorization.

340404014440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20379 (or 20375 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 340404014440 its reverse (44410404043), we get a palindrome (384814418483).

The spelling of 340404014440 in words is "three hundred forty billion, four hundred four million, fourteen thousand, four hundred forty".