28684898490 has 64 divisors (see below), whose sum is σ = 72938257920. Its totient is φ = 7194915840.

The previous prime is 28684898369. The next prime is 28684898503. The reversal of 28684898490 is 9489848682.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 855135 + ... + 888045.

It is an arithmetic number, because the mean of its divisors is an integer number (1139660280).

Almost surely, 2^28684898490 is an apocalyptic number.

28684898490 is an abundant number, since it is smaller than the sum of its proper divisors (44253359430).

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

28684898490 is a wasteful number, since it uses less digits than its factorization.

28684898490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34647.

The product of its (nonzero) digits is 63700992, while the sum is 66.

The spelling of 28684898490 in words is "twenty-eight billion, six hundred eighty-four million, eight hundred ninety-eight thousand, four hundred ninety".