3493831420728 has 48 divisors (see below), whose sum is σ = 10322683745400. Its totient is φ = 1058736793920.

The previous prime is 3493831420721. The next prime is 3493831420759. The reversal of 3493831420728 is 8270241383943.

It is a happy number.

3493831420728 is a `hidden beast` number, since 3 + 49 + 383 + 14 + 207 + 2 + 8 = 666.

3493831420728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3493831420721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2205700863 + ... + 2205702446.

Almost surely, 2^{3493831420728} is an apocalyptic number.

It is an amenable number.

3493831420728 is an abundant number, since it is smaller than the sum of its proper divisors (6828852324672).

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

3493831420728 is a wasteful number, since it uses less digits than its factorization.

3493831420728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411403332 (or 4411403325 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 3493831420728 in words is "three trillion, four hundred ninety-three billion, eight hundred thirty-one million, four hundred twenty thousand, seven hundred twenty-eight".