2871390 has 16 divisors (see below), whose sum is σ = 6891408. Its totient is φ = 765696.

The previous prime is 2871367. The next prime is 2871391. The reversal of 2871390 is 931782.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 95713 = 2871390 / (2 + 8 + 7 + 1 + 3 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2871391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47827 + ... + 47886.

It is an arithmetic number, because the mean of its divisors is an integer number (430713).

2^2871390 is an apocalyptic number.

2871390 is an abundant number, since it is smaller than the sum of its proper divisors (4020018).

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

2871390 is a wasteful number, since it uses less digits than its factorization.

2871390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95723.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2871390 is about 1694.5176304778. The cubic root of 2871390 is about 142.1338089358.

The spelling of 2871390 in words is "two million, eight hundred seventy-one thousand, three hundred ninety".