349406928 has 60 divisors (see below), whose sum is σ = 1053079300. Its totient is φ = 107509248.

The previous prime is 349406887. The next prime is 349406929. The reversal of 349406928 is 829604943.

It can be written as a sum of positive squares in 2 ways, for example, as 238146624 + 111260304 = 15432^2 + 10548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349406929) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 91453 + ... + 95196.

Almost surely, 2^349406928 is an apocalyptic number.

It is an amenable number.

349406928 is an abundant number, since it is smaller than the sum of its proper divisors (703672372).

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

349406928 is a wasteful number, since it uses less digits than its factorization.

349406928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186676 (or 186667 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 349406928 is about 18692.4296976075. The cubic root of 349406928 is about 704.3315952523.

The spelling of 349406928 in words is "three hundred forty-nine million, four hundred six thousand, nine hundred twenty-eight".