349752270 has 64 divisors (see below), whose sum is σ = 962896896. Its totient is φ = 79645440.

The previous prime is 349752269. The next prime is 349752281. The reversal of 349752270 is 72257943.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56047 + ... + 61973.

It is an arithmetic number, because the mean of its divisors is an integer number (15045264).

Almost surely, 2^349752270 is an apocalyptic number.

349752270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 349752270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481448448).

349752270 is an abundant number, since it is smaller than the sum of its proper divisors (613144626).

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

349752270 is a wasteful number, since it uses less digits than its factorization.

349752270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6225.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 349752270 is about 18701.6648991473. The cubic root of 349752270 is about 704.5635646945.

The spelling of 349752270 in words is "three hundred forty-nine million, seven hundred fifty-two thousand, two hundred seventy".