345216884 has 18 divisors (see below), whose sum is σ = 619235862. Its totient is φ = 168395200.

The previous prime is 345216881. The next prime is 345216917. The reversal of 345216884 is 488612543.

It can be written as a sum of positive squares in 3 ways, for example, as 484 + 345216400 = 22^2 + 18580^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345216881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18947 + ... + 32394.

Almost surely, 2^345216884 is an apocalyptic number.

It is an amenable number.

345216884 is a deficient number, since it is larger than the sum of its proper divisors (274018978).

345216884 is a wasteful number, since it uses less digits than its factorization.

345216884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51427 (or 51384 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 345216884 is about 18580.0130247532. The cubic root of 345216884 is about 701.5048469436.

The spelling of 345216884 in words is "three hundred forty-five million, two hundred sixteen thousand, eight hundred eighty-four".