340705320 has 64 divisors (see below), whose sum is σ = 1032272640. Its totient is φ = 89952000.

The previous prime is 340705273. The next prime is 340705327. The reversal of 340705320 is 23507043.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (340705327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1936 + ... + 26175.

It is an arithmetic number, because the mean of its divisors is an integer number (16129260).

Almost surely, 2^340705320 is an apocalyptic number.

340705320 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 340705320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516136320).

340705320 is an abundant number, since it is smaller than the sum of its proper divisors (691567320).

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

340705320 is a wasteful number, since it uses less digits than its factorization.

340705320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28226 (or 28222 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 340705320 is about 18458.2046797623. The cubic root of 340705320 is about 698.4354991410.

The spelling of 340705320 in words is "three hundred forty million, seven hundred five thousand, three hundred twenty".