344021646 has 16 divisors (see below), whose sum is σ = 688630608. Its totient is φ = 114576000.

The previous prime is 344021641. The next prime is 344021681. The reversal of 344021646 is 646120443.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344021641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16665 + ... + 31076.

It is an arithmetic number, because the mean of its divisors is an integer number (43039413).

Almost surely, 2^344021646 is an apocalyptic number.

344021646 is an abundant number, since it is smaller than the sum of its proper divisors (344608962).

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

344021646 is a wasteful number, since it uses less digits than its factorization.

344021646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48947.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 344021646 is about 18547.8205188642. The cubic root of 344021646 is about 700.6943083882.

The spelling of 344021646 in words is "three hundred forty-four million, twenty-one thousand, six hundred forty-six".