349799728 has 20 divisors (see below), whose sum is σ = 713407960. Its totient is φ = 165694464.

The previous prime is 349799719. The next prime is 349799743. The reversal of 349799728 is 827997943.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575025 + ... + 575632.

It is an arithmetic number, because the mean of its divisors is an integer number (35670398).

Almost surely, 2^349799728 is an apocalyptic number.

349799728 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

349799728 is an abundant number, since it is smaller than the sum of its proper divisors (363608232).

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

349799728 is a wasteful number, since it uses less digits than its factorization.

349799728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150684 (or 1150678 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 58.

The square root of 349799728 is about 18702.9336736246. The cubic root of 349799728 is about 704.5954307402.

The spelling of 349799728 in words is "three hundred forty-nine million, seven hundred ninety-nine thousand, seven hundred twenty-eight".