2928871 has 4 divisors (see below), whose sum is σ = 3195144. Its totient is φ = 2662600.

The previous prime is 2928851. The next prime is 2928881. The reversal of 2928871 is 1788292.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2928871 - 2⁵ = 2928839 is a prime.

It is a Duffinian number.

2928871 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2928871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133120 + ... + 133141.

It is an arithmetic number, because the mean of its divisors is an integer number (798786).

2^2928871 is an apocalyptic number.

2928871 is a deficient number, since it is larger than the sum of its proper divisors (266273).

2928871 is a wasteful number, since it uses less digits than its factorization.

2928871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266272.

The product of its digits is 16128, while the sum is 37.

The square root of 2928871 is about 1711.3944606665. The cubic root of 2928871 is about 143.0759861535.

It can be divided in two parts, 29 and 28871, that added together give a square (28900 = 170²).

The spelling of 2928871 in words is "two million, nine hundred twenty-eight thousand, eight hundred seventy-one".