349689072 has 160 divisors (see below), whose sum is σ = 1003467520. Its totient is φ = 104509440.

The previous prime is 349689059. The next prime is 349689073. The reversal of 349689072 is 270986943.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349689073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1450872 + ... + 1451112.

It is an arithmetic number, because the mean of its divisors is an integer number (6271672).

Almost surely, 2^349689072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 349689072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501733760).

349689072 is an abundant number, since it is smaller than the sum of its proper divisors (653778448).

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

349689072 is a wasteful number, since it uses less digits than its factorization.

349689072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 349689072 is about 18699.9751871493. The cubic root of 349689072 is about 704.5211254271.

The spelling of 349689072 in words is "three hundred forty-nine million, six hundred eighty-nine thousand, seventy-two".