349021512 has 72 divisors (see below), whose sum is σ = 1099606950. Its totient is φ = 99719424.

The previous prime is 349021501. The next prime is 349021531. The reversal of 349021512 is 215120943.

It can be written as a sum of positive squares in only one way, i.e., 336869316 + 12152196 = 18354^2 + 3486^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×349021512² = 243632031677532288, which contains 22 as substring.

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 17 ways as a sum of consecutive naturals, for example, 45937 + ... + 52992.

Almost surely, 2^349021512 is an apocalyptic number.

It is an amenable number.

349021512 is an abundant number, since it is smaller than the sum of its proper divisors (750585438).

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

349021512 is a wasteful number, since it uses less digits than its factorization.

349021512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98955 (or 98941 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 349021512 is about 18682.1174388772. The cubic root of 349021512 is about 704.0725271784.

The spelling of 349021512 in words is "three hundred forty-nine million, twenty-one thousand, five hundred twelve".