340183998 has 144 divisors (see below), whose sum is σ = 945610848. Its totient is φ = 86486400.

The previous prime is 340183997. The next prime is 340184003. The reversal of 340183998 is 899381043.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340183993) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 807828 + ... + 808248.

It is an arithmetic number, because the mean of its divisors is an integer number (6566742).

Almost surely, 2^340183998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340183998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472805424).

340183998 is an abundant number, since it is smaller than the sum of its proper divisors (605426850).

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

340183998 is a wasteful number, since it uses less digits than its factorization.

340183998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 340183998 is about 18444.0775860437. The cubic root of 340183998 is about 698.0790859013.

The spelling of 340183998 in words is "three hundred forty million, one hundred eighty-three thousand, nine hundred ninety-eight".