340209018 has 32 divisors (see below), whose sum is σ = 761112000. Its totient is φ = 112639248.

The previous prime is 340208993. The next prime is 340209029. The reversal of 340209018 is 810902043.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 340208982 and 340209000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13096 + ... + 29187.

It is an arithmetic number, because the mean of its divisors is an integer number (23784750).

Almost surely, 2^340209018 is an apocalyptic number.

340209018 is an abundant number, since it is smaller than the sum of its proper divisors (420902982).

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

340209018 is a wasteful number, since it uses less digits than its factorization.

340209018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42443 (or 42437 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 340209018 is about 18444.7558400755. The cubic root of 340209018 is about 698.0961996894.

The spelling of 340209018 in words is "three hundred forty million, two hundred nine thousand, eighteen".