343999872 has 80 divisors (see below), whose sum is σ = 1023768900. Its totient is φ = 114663168.

The previous prime is 343999861. The next prime is 343999889. The reversal of 343999872 is 278999343.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6222 + ... + 26957.

Almost surely, 2^343999872 is an apocalyptic number.

343999872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

343999872 is an abundant number, since it is smaller than the sum of its proper divisors (679769028).

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

343999872 is an equidigital number, since it uses as much as digits as its factorization.

343999872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33205 (or 33184 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 343999872 is about 18547.2335403423. The cubic root of 343999872 is about 700.6795251713.

The spelling of 343999872 in words is "three hundred forty-three million, nine hundred ninety-nine thousand, eight hundred seventy-two".