28541994486 has 32 divisors (see below), whose sum is σ = 60093066240. Its totient is φ = 9019807104.

The previous prime is 28541994461. The next prime is 28541994493. The reversal of 28541994486 is 68449914582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 899566 + ... + 930753.

It is an arithmetic number, because the mean of its divisors is an integer number (1877908320).

Almost surely, 2^28541994486 is an apocalyptic number.

28541994486 is an abundant number, since it is smaller than the sum of its proper divisors (31551071754).

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

28541994486 is a wasteful number, since it uses less digits than its factorization.

28541994486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830460.

The product of its digits is 19906560, while the sum is 60.

The spelling of 28541994486 in words is "twenty-eight billion, five hundred forty-one million, nine hundred ninety-four thousand, four hundred eighty-six".