347290428 has 24 divisors (see below), whose sum is σ = 838288080. Its totient is φ = 111771520.

The previous prime is 347290421. The next prime is 347290441. The reversal of 347290428 is 824092743.

It is a super-2 number, since 2×347290428² = 241221282760846368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347290421) 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, 498633 + ... + 499328.

It is an arithmetic number, because the mean of its divisors is an integer number (34928670).

Almost surely, 2^347290428 is an apocalyptic number.

It is an amenable number.

347290428 is an abundant number, since it is smaller than the sum of its proper divisors (490997652).

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

347290428 is a wasteful number, since it uses less digits than its factorization.

347290428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997997 (or 997995 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 347290428 is about 18635.7298756985. The cubic root of 347290428 is about 702.9065729898.

The spelling of 347290428 in words is "three hundred forty-seven million, two hundred ninety thousand, four hundred twenty-eight".