2871020 has 12 divisors (see below), whose sum is σ = 6029184. Its totient is φ = 1148400.

The previous prime is 2871019. The next prime is 2871031. The reversal of 2871020 is 201782.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 143551 = 2871020 / (2 + 8 + 7 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2870983 and 2871001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71756 + ... + 71795.

It is an arithmetic number, because the mean of its divisors is an integer number (502432).

2^2871020 is an apocalyptic number.

2871020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2871020 is an abundant number, since it is smaller than the sum of its proper divisors (3158164).

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

2871020 is a wasteful number, since it uses less digits than its factorization.

2871020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143560 (or 143558 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 2871020 is about 1694.4084513481. The cubic root of 2871020 is about 142.1277036734.

The spelling of 2871020 in words is "two million, eight hundred seventy-one thousand, twenty".