349453278 has 20 divisors (see below), whose sum is σ = 783034560. Its totient is φ = 116484372.

The previous prime is 349453259. The next prime is 349453331. The reversal of 349453278 is 872354943.

349453278 is a `hidden beast` number, since 3 + 49 + 4 + 532 + 78 = 666.

It is a Curzon number.

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 9 ways as a sum of consecutive naturals, for example, 1078398 + ... + 1078721.

It is an arithmetic number, because the mean of its divisors is an integer number (39151728).

Almost surely, 2^349453278 is an apocalyptic number.

349453278 is an abundant number, since it is smaller than the sum of its proper divisors (433581282).

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

349453278 is a wasteful number, since it uses less digits than its factorization.

349453278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157133 (or 2157124 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 349453278 is about 18693.6694632167. The cubic root of 349453278 is about 704.3627378575.

The spelling of 349453278 in words is "three hundred forty-nine million, four hundred fifty-three thousand, two hundred seventy-eight".