340186938 has 64 divisors (see below), whose sum is σ = 839946240. Its totient is φ = 89445312.

The previous prime is 340186933. The next prime is 340186961. The reversal of 340186938 is 839681043.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 340186938.

It is not an unprimeable number, because it can be changed into a prime (340186933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228031 + ... + 229517.

It is an arithmetic number, because the mean of its divisors is an integer number (13124160).

Almost surely, 2^340186938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340186938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419973120).

340186938 is an abundant number, since it is smaller than the sum of its proper divisors (499759302).

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

340186938 is a wasteful number, since it uses less digits than its factorization.

340186938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 340186938 is about 18444.1572862519. The cubic root of 340186938 is about 698.0810969175.

The spelling of 340186938 in words is "three hundred forty million, one hundred eighty-six thousand, nine hundred thirty-eight".