349687028 has 12 divisors (see below), whose sum is σ = 612551940. Its totient is φ = 174672192.

The previous prime is 349686973. The next prime is 349687031. The reversal of 349687028 is 820786943.

It can be written as a sum of positive squares in 2 ways, for example, as 339370084 + 10316944 = 18422^2 + 3212^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38183 + ... + 46446.

It is an arithmetic number, because the mean of its divisors is an integer number (51045995).

Almost surely, 2^349687028 is an apocalyptic number.

It is an amenable number.

349687028 is a deficient number, since it is larger than the sum of its proper divisors (262864912).

349687028 is a wasteful number, since it uses less digits than its factorization.

349687028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85666 (or 85664 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 349687028 is about 18699.9205345905. The cubic root of 349687028 is about 704.5197527372.

The spelling of 349687028 in words is "three hundred forty-nine million, six hundred eighty-seven thousand, twenty-eight".