349780740 has 24 divisors (see below), whose sum is σ = 979386240. Its totient is φ = 93274848.

The previous prime is 349780681. The next prime is 349780759. The reversal of 349780740 is 47087943.

It is a junction number, because it is equal to n+sod(n) for n = 349780692 and 349780701.

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, 2914780 + ... + 2914899.

It is an arithmetic number, because the mean of its divisors is an integer number (40807760).

Almost surely, 2^349780740 is an apocalyptic number.

349780740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

349780740 is an abundant number, since it is smaller than the sum of its proper divisors (629605500).

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

349780740 is a wasteful number, since it uses less digits than its factorization.

349780740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5829691 (or 5829689 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 349780740 is about 18702.4260458369. The cubic root of 349780740 is about 704.5826814448.

The spelling of 349780740 in words is "three hundred forty-nine million, seven hundred eighty thousand, seven hundred forty".