340539840 has 336 divisors, whose sum is σ = 1258141248. Its totient is φ = 84344832.

The previous prime is 340539811. The next prime is 340539841. The reversal of 340539840 is 48935043.

340539840 is a `hidden beast` number, since 3 + 40 + 539 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 340539795 and 340539804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340539841) 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 47 ways as a sum of consecutive naturals, for example, 3510672 + ... + 3510768.

It is an arithmetic number, because the mean of its divisors is an integer number (3744468).

Almost surely, 2^340539840 is an apocalyptic number.

340539840 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 340539840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629070624).

340539840 is an abundant number, since it is smaller than the sum of its proper divisors (917601408).

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

340539840 is a wasteful number, since it uses less digits than its factorization.

340539840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 340539840 is about 18453.7215758773. The cubic root of 340539840 is about 698.3224045139.

The spelling of 340539840 in words is "three hundred forty million, five hundred thirty-nine thousand, eight hundred forty".