349928215 has 16 divisors (see below), whose sum is σ = 516817728. Its totient is φ = 221492736.

The previous prime is 349928213. The next prime is 349928219. The reversal of 349928215 is 512829943.

It is a cyclic number.

It is not a de Polignac number, because 349928215 - 2¹ = 349928213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349928213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384082 + ... + 384991.

It is an arithmetic number, because the mean of its divisors is an integer number (32301108).

Almost surely, 2^349928215 is an apocalyptic number.

349928215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

349928215 is a deficient number, since it is larger than the sum of its proper divisors (166889513).

349928215 is a wasteful number, since it uses less digits than its factorization.

349928215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769098.

The product of its digits is 155520, while the sum is 43.

The square root of 349928215 is about 18706.3683006617. The cubic root of 349928215 is about 704.6816898799.

The spelling of 349928215 in words is "three hundred forty-nine million, nine hundred twenty-eight thousand, two hundred fifteen".