3129285516 has 48 divisors (see below), whose sum is σ = 8707582464. Its totient is φ = 855207936.

The previous prime is 3129285491. The next prime is 3129285529. The reversal of 3129285516 is 6155829213.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807925 + ... + 811788.

It is an arithmetic number, because the mean of its divisors is an integer number (181407968).

Almost surely, 2^3129285516 is an apocalyptic number.

It is an amenable number.

3129285516 is an abundant number, since it is smaller than the sum of its proper divisors (5578296948).

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

3129285516 is a wasteful number, since it uses less digits than its factorization.

3129285516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619750 (or 1619748 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 3129285516 is about 55940.0171254890. The cubic root of 3129285516 is about 1462.6768798266.

The spelling of 3129285516 in words is "three billion, one hundred twenty-nine million, two hundred eighty-five thousand, five hundred sixteen".