3129880 has 48 divisors (see below), whose sum is σ = 7642080. Its totient is φ = 1153152.

The previous prime is 3129859. The next prime is 3129911. The reversal of 3129880 is 889213.

It is a super-2 number, since 2×3129880² = 19592297628800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6529 + ... + 6991.

It is an arithmetic number, because the mean of its divisors is an integer number (159210).

Almost surely, 2^3129880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3129880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3821040).

3129880 is an abundant number, since it is smaller than the sum of its proper divisors (4512200).

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

3129880 is a wasteful number, since it uses less digits than its factorization.

3129880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 3129880 is about 1769.1466869652. The cubic root of 3129880 is about 146.2769497661.

The spelling of 3129880 in words is "three million, one hundred twenty-nine thousand, eight hundred eighty".