2928861 has 12 divisors (see below), whose sum is σ = 4556188. Its totient is φ = 1802304.

The previous prime is 2928851. The next prime is 2928881. The reversal of 2928861 is 1688292.

It can be written as a sum of positive squares in 2 ways, for example, as 352836 + 2576025 = 594^2 + 1605^2 .

It is not a de Polignac number, because 2928861 - 2⁵ = 2928829 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 12400 + ... + 12633.

2^2928861 is an apocalyptic number.

It is an amenable number.

2928861 is a deficient number, since it is larger than the sum of its proper divisors (1627327).

2928861 is a wasteful number, since it uses less digits than its factorization.

2928861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25052 (or 25049 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2928861 is about 1711.3915390699. The cubic root of 2928861 is about 143.0758233193.

The spelling of 2928861 in words is "two million, nine hundred twenty-eight thousand, eight hundred sixty-one".