2509928 has 8 divisors (see below), whose sum is σ = 4706130. Its totient is φ = 1254960.

The previous prime is 2509907. The next prime is 2509933. The reversal of 2509928 is 8299052.

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 708964 = 1342^2 + 842^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156863 + ... + 156878.

2^2509928 is an apocalyptic number.

It is an amenable number.

2509928 is a deficient number, since it is larger than the sum of its proper divisors (2196202).

2509928 is a wasteful number, since it uses less digits than its factorization.

2509928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313747 (or 313743 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 2509928 is about 1584.2752286140. The cubic root of 2509928 is about 135.9003017874.

The spelling of 2509928 in words is "two million, five hundred nine thousand, nine hundred twenty-eight".