20028798 has 48 divisors (see below), whose sum is σ = 44993520. Its totient is φ = 6435072.

The previous prime is 20028773. The next prime is 20028809. The reversal of 20028798 is 89782002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87348 + ... + 87576.

It is an arithmetic number, because the mean of its divisors is an integer number (937365).

Almost surely, 2^20028798 is an apocalyptic number.

20028798 is an abundant number, since it is smaller than the sum of its proper divisors (24964722).

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

20028798 is a wasteful number, since it uses less digits than its factorization.

20028798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 20028798 is about 4475.3545110974. The cubic root of 20028798 is about 271.5719821755.

The spelling of 20028798 in words is "twenty million, twenty-eight thousand, seven hundred ninety-eight".