349667860 has 24 divisors (see below), whose sum is σ = 746342856. Its totient is φ = 137573760.

The previous prime is 349667839. The next prime is 349667861. The reversal of 349667860 is 68766943.

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 349166596 = 708^2 + 18686^2 .

It is a super-2 number, since 2×349667860² = 244535224633959200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349667861) 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, 142087 + ... + 144526.

It is an arithmetic number, because the mean of its divisors is an integer number (31097619).

Almost surely, 2^349667860 is an apocalyptic number.

It is an amenable number.

349667860 is an abundant number, since it is smaller than the sum of its proper divisors (396674996).

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

349667860 is a wasteful number, since it uses less digits than its factorization.

349667860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286683 (or 286681 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 349667860 is about 18699.4080120201. The cubic root of 349667860 is about 704.5068798153.

The spelling of 349667860 in words is "three hundred forty-nine million, six hundred sixty-seven thousand, eight hundred sixty".