2928121 has 4 divisors (see below), whose sum is σ = 3346432. Its totient is φ = 2509812.

The previous prime is 2928119. The next prime is 2928137. The reversal of 2928121 is 1218292.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2928121 - 2¹ = 2928119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2928151) 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, 209145 + ... + 209158.

It is an arithmetic number, because the mean of its divisors is an integer number (836608).

2^2928121 is an apocalyptic number.

It is an amenable number.

2928121 is a deficient number, since it is larger than the sum of its proper divisors (418311).

2928121 is an equidigital number, since it uses as much as digits as its factorization.

2928121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418310.

The product of its digits is 576, while the sum is 25.

The square root of 2928121 is about 1711.1753270779. The cubic root of 2928121 is about 143.0637725565.

The spelling of 2928121 in words is "two million, nine hundred twenty-eight thousand, one hundred twenty-one".