2928021 has 8 divisors (see below), whose sum is σ = 3912480. Its totient is φ = 1947792.

The previous prime is 2928019. The next prime is 2928049. The reversal of 2928021 is 1208292.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2928021 - 2¹ = 2928019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2927982 and 2928000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928421) 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, 1335 + ... + 2763.

It is an arithmetic number, because the mean of its divisors is an integer number (489060).

2^2928021 is an apocalyptic number.

It is an amenable number.

2928021 is a deficient number, since it is larger than the sum of its proper divisors (984459).

2928021 is a wasteful number, since it uses less digits than its factorization.

2928021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2928021 is about 1711.1461071457. The cubic root of 2928021 is about 143.0621439193.

The spelling of 2928021 in words is "two million, nine hundred twenty-eight thousand, twenty-one".