340181820 has 108 divisors (see below), whose sum is σ = 1134293160. Its totient is φ = 82463040.

The previous prime is 340181759. The next prime is 340181827. The reversal of 340181820 is 28181043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340181827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13971 + ... + 29589.

Almost surely, 2^340181820 is an apocalyptic number.

340181820 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 340181820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (567146580).

340181820 is an abundant number, since it is smaller than the sum of its proper divisors (794111340).

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

340181820 is a wasteful number, since it uses less digits than its factorization.

340181820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15656 (or 15640 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 340181820 is about 18444.0185426062. The cubic root of 340181820 is about 698.0775961002.

The spelling of 340181820 in words is "three hundred forty million, one hundred eighty-one thousand, eight hundred twenty".