349084780 has 48 divisors (see below), whose sum is σ = 801833760. Its totient is φ = 126604800.

The previous prime is 349084753. The next prime is 349084787. The reversal of 349084780 is 87480943.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (349084787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90736 + ... + 94504.

It is an arithmetic number, because the mean of its divisors is an integer number (16704870).

Almost surely, 2^349084780 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 349084780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400916880).

349084780 is an abundant number, since it is smaller than the sum of its proper divisors (452748980).

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

349084780 is a wasteful number, since it uses less digits than its factorization.

349084780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210 (or 4208 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 349084780 is about 18683.8106391603. The cubic root of 349084780 is about 704.1150676024.

The spelling of 349084780 in words is "three hundred forty-nine million, eighty-four thousand, seven hundred eighty".