344062640 has 40 divisors (see below), whose sum is σ = 842051760. Its totient is φ = 130381056.

The previous prime is 344062619. The next prime is 344062657. The reversal of 344062640 is 46260443.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 111659 + ... + 114698.

It is an arithmetic number, because the mean of its divisors is an integer number (21051294).

Almost surely, 2^344062640 is an apocalyptic number.

It is an amenable number.

344062640 is an abundant number, since it is smaller than the sum of its proper divisors (497989120).

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

344062640 is a wasteful number, since it uses less digits than its factorization.

344062640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226389 (or 226383 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 344062640 is about 18548.9255753534. The cubic root of 344062640 is about 700.7221391191.

The spelling of 344062640 in words is "three hundred forty-four million, sixty-two thousand, six hundred forty".