344445690 has 16 divisors (see below), whose sum is σ = 826669728. Its totient is φ = 91852176.

The previous prime is 344445643. The next prime is 344445701. The reversal of 344445690 is 96544443.

It is a super-2 number, since 2×344445690² = 237285666719152200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5740732 + ... + 5740791.

It is an arithmetic number, because the mean of its divisors is an integer number (51666858).

Almost surely, 2^344445690 is an apocalyptic number.

344445690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

344445690 is an abundant number, since it is smaller than the sum of its proper divisors (482224038).

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

344445690 is a wasteful number, since it uses less digits than its factorization.

344445690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11481533.

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 344445690 is about 18559.2480989937. The cubic root of 344445690 is about 700.9820840990.

The spelling of 344445690 in words is "three hundred forty-four million, four hundred forty-five thousand, six hundred ninety".