344664140 has 24 divisors (see below), whose sum is σ = 732518640. Its totient is φ = 136203968.

The previous prime is 344664127. The next prime is 344664143. The reversal of 344664140 is 41466443.

It is a junction number, because it is equal to n+sod(n) for n = 344664097 and 344664106.

It is not an unprimeable number, because it can be changed into a prime (344664143) 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 7 ways as a sum of consecutive naturals, for example, 102155 + ... + 105474.

It is an arithmetic number, because the mean of its divisors is an integer number (30521610).

Almost surely, 2^344664140 is an apocalyptic number.

It is an amenable number.

344664140 is an abundant number, since it is smaller than the sum of its proper divisors (387854500).

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

344664140 is a wasteful number, since it uses less digits than its factorization.

344664140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207721 (or 207719 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 344664140 is about 18565.1323722725. The cubic root of 344664140 is about 701.1302421204.

The spelling of 344664140 in words is "three hundred forty-four million, six hundred sixty-four thousand, one hundred forty".