2811249928 has 16 divisors (see below), whose sum is σ = 5293152000. Its totient is φ = 1399742736.

The previous prime is 2811249919. The next prime is 2811249941. The reversal of 2811249928 is 8299421182.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733248 + ... + 737071.

It is an arithmetic number, because the mean of its divisors is an integer number (330822000).

Almost surely, 2^2811249928 is an apocalyptic number.

It is an amenable number.

2811249928 is a deficient number, since it is larger than the sum of its proper divisors (2481902072).

2811249928 is a wasteful number, since it uses less digits than its factorization.

2811249928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470564 (or 1470560 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 2811249928 is about 53021.2214872498. The cubic root of 2811249928 is about 1411.3448811669.

The spelling of 2811249928 in words is "two billion, eight hundred eleven million, two hundred forty-nine thousand, nine hundred twenty-eight".