349237780 has 24 divisors (see below), whose sum is σ = 741643560. Its totient is φ = 138124800.

The previous prime is 349237753. The next prime is 349237781. The reversal of 349237780 is 87732943.

It can be written as a sum of positive squares in 4 ways, for example, as 61528336 + 287709444 = 7844^2 + 16962^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349237781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96321 + ... + 99880.

It is an arithmetic number, because the mean of its divisors is an integer number (30901815).

Almost surely, 2^349237780 is an apocalyptic number.

It is an amenable number.

349237780 is an abundant number, since it is smaller than the sum of its proper divisors (392405780).

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

349237780 is a wasteful number, since it uses less digits than its factorization.

349237780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196299 (or 196297 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 349237780 is about 18687.9046444485. The cubic root of 349237780 is about 704.2179211940.

The spelling of 349237780 in words is "three hundred forty-nine million, two hundred thirty-seven thousand, seven hundred eighty".