3993028 has 24 divisors (see below), whose sum is σ = 7969752. Its totient is φ = 1734144.

The previous prime is 3993019. The next prime is 3993029. The reversal of 3993028 is 8203993.

It can be written as a sum of positive squares in 4 ways, for example, as 1024 + 3992004 = 32^2 + 1998^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 3992984 and 3993002.

It is not an unprimeable number, because it can be changed into a prime (3993029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1375 + ... + 3142.

It is an arithmetic number, because the mean of its divisors is an integer number (332073).

Almost surely, 2^3993028 is an apocalyptic number.

It is an amenable number.

3993028 is a deficient number, since it is larger than the sum of its proper divisors (3976724).

3993028 is a wasteful number, since it uses less digits than its factorization.

3993028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551 (or 4549 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 3993028 is about 1998.2562398251. The cubic root of 3993028 is about 158.6478235593.

The spelling of 3993028 in words is "three million, nine hundred ninety-three thousand, twenty-eight".