2928031 has 4 divisors (see below), whose sum is σ = 2935600. Its totient is φ = 2920464.

The previous prime is 2928019. The next prime is 2928049. The reversal of 2928031 is 1308292.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2928031 is a prime.

It is a super-2 number, since 2×2928031² = 17146731073922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2927987 and 2928005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928931) 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, 3171 + ... + 3988.

It is an arithmetic number, because the mean of its divisors is an integer number (733900).

2^2928031 is an apocalyptic number.

2928031 is a deficient number, since it is larger than the sum of its proper divisors (7569).

2928031 is an equidigital number, since it uses as much as digits as its factorization.

2928031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2928031 is about 1711.1490291614. The cubic root of 2928031 is about 143.0623067847.

The spelling of 2928031 in words is "two million, nine hundred twenty-eight thousand, thirty-one".