349586280 has 80 divisors (see below), whose sum is σ = 1175009220. Its totient is φ = 93222144.

The previous prime is 349586243. The next prime is 349586299. The reversal of 349586280 is 82685943.

349586280 is a `hidden beast` number, since 3 + 49 + 586 + 28 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 345736836 + 3849444 = 18594^2 + 1962^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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 19 ways as a sum of consecutive naturals, for example, 50709 + ... + 57188.

Almost surely, 2^349586280 is an apocalyptic number.

349586280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

349586280 is an abundant number, since it is smaller than the sum of its proper divisors (825422940).

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

349586280 is a wasteful number, since it uses less digits than its factorization.

349586280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107920 (or 107907 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 349586280 is about 18697.2265322962. The cubic root of 349586280 is about 704.4520867311.

It can be divided in two parts, 349586 and 280, that added together give a triangular number (349866 = T₈₃₆).

The spelling of 349586280 in words is "three hundred forty-nine million, five hundred eighty-six thousand, two hundred eighty".