349000002 has 56 divisors (see below), whose sum is σ = 845313084. Its totient is φ = 107378784.

The previous prime is 348999979. The next prime is 349000009. The reversal of 349000002 is 200000943.

It can be written as a sum of positive squares in 2 ways, for example, as 314672121 + 34327881 = 17739^2 + 5859^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (349000009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9748 + ... + 28160.

Almost surely, 2^349000002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 349000002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422656542).

349000002 is an abundant number, since it is smaller than the sum of its proper divisors (496313082).

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

349000002 is a wasteful number, since it uses less digits than its factorization.

349000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18446 (or 18431 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 349000002 is about 18681.5417457982. The cubic root of 349000002 is about 704.0580630163.

Adding to 349000002 its reverse (200000943), we get a palindrome (549000945).

The spelling of 349000002 in words is "three hundred forty-nine million, two", and thus it is an aban number.