349190730 has 128 divisors (see below), whose sum is σ = 1087119360. Its totient is φ = 78096960.

The previous prime is 349190717. The next prime is 349190731. The reversal of 349190730 is 37091943.

It is not an unprimeable number, because it can be changed into a prime (349190731) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86865 + ... + 90795.

It is an arithmetic number, because the mean of its divisors is an integer number (8493120).

Almost surely, 2^349190730 is an apocalyptic number.

349190730 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 349190730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543559680).

349190730 is an abundant number, since it is smaller than the sum of its proper divisors (737928630).

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

349190730 is a wasteful number, since it uses less digits than its factorization.

349190730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001 (or 3995 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 349190730 is about 18686.6457664290. The cubic root of 349190730 is about 704.1862952330.

The spelling of 349190730 in words is "three hundred forty-nine million, one hundred ninety thousand, seven hundred thirty".