3281512420 has 24 divisors (see below), whose sum is σ = 7253870400. Its totient is φ = 1243520352.

The previous prime is 3281512387. The next prime is 3281512433. The reversal of 3281512420 is 242151823.

It is a super-2 number, since 2×3281512420² = 21536647525228512800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4317400 + ... + 4318159.

It is an arithmetic number, because the mean of its divisors is an integer number (302244600).

Almost surely, 2^3281512420 is an apocalyptic number.

It is an amenable number.

3281512420 is an abundant number, since it is smaller than the sum of its proper divisors (3972357980).

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

3281512420 is a wasteful number, since it uses less digits than its factorization.

3281512420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8635587 (or 8635585 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 3281512420 is about 57284.4867307022. The cubic root of 3281512420 is about 1486.0201012046.

The spelling of 3281512420 in words is "three billion, two hundred eighty-one million, five hundred twelve thousand, four hundred twenty".