349726580 has 48 divisors (see below), whose sum is σ = 843628800. Its totient is φ = 119294208.

The previous prime is 349726579. The next prime is 349726591. The reversal of 349726580 is 85627943.

It is a congruent number.

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, 21584 + ... + 34136.

It is an arithmetic number, because the mean of its divisors is an integer number (17575600).

Almost surely, 2^349726580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 349726580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421814400).

349726580 is an abundant number, since it is smaller than the sum of its proper divisors (493902220).

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

349726580 is a wasteful number, since it uses less digits than its factorization.

349726580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12768 (or 12766 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 349726580 is about 18700.9780492893. The cubic root of 349726580 is about 704.5463137403.

The spelling of 349726580 in words is "three hundred forty-nine million, seven hundred twenty-six thousand, five hundred eighty".