340739840 has 144 divisors (see below), whose sum is σ = 988085952. Its totient is φ = 109903872.

The previous prime is 340739797. The next prime is 340739843. The reversal of 340739840 is 48937043.

340739840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×340739840² = 232207277126451200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340739794 and 340739803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340739843) 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, 151202 + ... + 153438.

It is an arithmetic number, because the mean of its divisors is an integer number (6861708).

Almost surely, 2^340739840 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 340739840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494042976).

340739840 is an abundant number, since it is smaller than the sum of its proper divisors (647346112).

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

340739840 is a wasteful number, since it uses less digits than its factorization.

340739840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 340739840 is about 18459.1397416023. The cubic root of 340739840 is about 698.4590866595.

The spelling of 340739840 in words is "three hundred forty million, seven hundred thirty-nine thousand, eight hundred forty".