4002821128 has 16 divisors (see below), whose sum is σ = 7522709760. Its totient is φ = 1996765200.

The previous prime is 4002821117. The next prime is 4002821149. The reversal of 4002821128 is 8211282004.

It is a junction number, because it is equal to n+sod(n) for n = 4002821096 and 4002821105.

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, 577008 + ... + 583903.

It is an arithmetic number, because the mean of its divisors is an integer number (470169360).

Almost surely, 2^4002821128 is an apocalyptic number.

It is an amenable number.

4002821128 is a deficient number, since it is larger than the sum of its proper divisors (3519888632).

4002821128 is a wasteful number, since it uses less digits than its factorization.

4002821128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161348 (or 1161344 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 4002821128 is about 63267.8522474092. The cubic root of 4002821128 is about 1587.7741527311.

The spelling of 4002821128 in words is "four billion, two million, eight hundred twenty-one thousand, one hundred twenty-eight".