3528021798 has 64 divisors (see below), whose sum is σ = 9487134720. Its totient is φ = 948710016.

The previous prime is 3528021787. The next prime is 3528021799. The reversal of 3528021798 is 8971208253.

It is a happy number.

3528021798 is a `hidden beast` number, since 352 + 80 + 217 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3528021799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268086 + ... + 280937.

It is an arithmetic number, because the mean of its divisors is an integer number (148236480).

Almost surely, 2^3528021798 is an apocalyptic number.

3528021798 is an abundant number, since it is smaller than the sum of its proper divisors (5959112922).

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

3528021798 is a wasteful number, since it uses less digits than its factorization.

3528021798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549058 (or 549052 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 3528021798 is about 59397.1531135963. The cubic root of 3528021798 is about 1522.3356574777.

The spelling of 3528021798 in words is "three billion, five hundred twenty-eight million, twenty-one thousand, seven hundred ninety-eight".