346789281 has 16 divisors (see below), whose sum is σ = 488407040. Its totient is φ = 218529360.

The previous prime is 346789249. The next prime is 346789297. The reversal of 346789281 is 182987643.

It is not a de Polignac number, because 346789281 - 2⁵ = 346789249 is a prime.

It is a super-2 number, since 2×346789281² = 240525610832993922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 346789281.

It is not an unprimeable number, because it can be changed into a prime (346789231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39361 + ... + 47358.

It is an arithmetic number, because the mean of its divisors is an integer number (30525440).

Almost surely, 2^346789281 is an apocalyptic number.

346789281 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

346789281 is a deficient number, since it is larger than the sum of its proper divisors (141617759).

346789281 is a wasteful number, since it uses less digits than its factorization.

346789281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86796.

The product of its digits is 580608, while the sum is 48.

The square root of 346789281 is about 18622.2791569668. The cubic root of 346789281 is about 702.5683075046.

The spelling of 346789281 in words is "three hundred forty-six million, seven hundred eighty-nine thousand, two hundred eighty-one".