340715640 has 64 divisors (see below), whose sum is σ = 1028476800. Its totient is φ = 90294912.

The previous prime is 340715633. The next prime is 340715653. The reversal of 340715640 is 46517043.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 340715598 and 340715607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10851 + ... + 28269.

It is an arithmetic number, because the mean of its divisors is an integer number (16069950).

Almost surely, 2^340715640 is an apocalyptic number.

340715640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340715640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514238400).

340715640 is an abundant number, since it is smaller than the sum of its proper divisors (687761160).

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

340715640 is a wasteful number, since it uses less digits than its factorization.

340715640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17596 (or 17592 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 340715640 is about 18458.4842281266. The cubic root of 340715640 is about 698.4425509647.

The spelling of 340715640 in words is "three hundred forty million, seven hundred fifteen thousand, six hundred forty".