347684428 has 48 divisors (see below), whose sum is σ = 767156544. Its totient is φ = 134184960.

The previous prime is 347684419. The next prime is 347684479. The reversal of 347684428 is 824486743.

It is a super-2 number, since 2×347684428² = 241768922947374368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3276 + ... + 26572.

It is an arithmetic number, because the mean of its divisors is an integer number (15982428).

Almost surely, 2^347684428 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 347684428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383578272).

347684428 is an abundant number, since it is smaller than the sum of its proper divisors (419472116).

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

347684428 is a wasteful number, since it uses less digits than its factorization.

347684428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23362 (or 23360 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 46.

The square root of 347684428 is about 18646.2979703747. The cubic root of 347684428 is about 703.1722876983.

The spelling of 347684428 in words is "three hundred forty-seven million, six hundred eighty-four thousand, four hundred twenty-eight".