2920728 has 16 divisors (see below), whose sum is σ = 7301880. Its totient is φ = 973568.

The previous prime is 2920693. The next prime is 2920739. The reversal of 2920728 is 8270292.

2920728 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁴ + 9 + 2²⁰ + 0 + 7⁷ + 2²⁰ + 8 .

It is a junction number, because it is equal to n+sod(n) for n = 2920695 and 2920704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60825 + ... + 60872.

2^2920728 is an apocalyptic number.

It is an amenable number.

2920728 is an abundant number, since it is smaller than the sum of its proper divisors (4381152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2920728 is a wasteful number, since it uses less digits than its factorization.

2920728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121706 (or 121702 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2920728 is about 1709.0137506761. The cubic root of 2920728 is about 142.9432673057.

The spelling of 2920728 in words is "two million, nine hundred twenty thousand, seven hundred twenty-eight".