28401886484 has 24 divisors (see below), whose sum is σ = 52612966560. Its totient is φ = 13392386784.

The previous prime is 28401886483. The next prime is 28401886493. The reversal of 28401886484 is 48468810482.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28401886483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2842034 + ... + 2852009.

It is an arithmetic number, because the mean of its divisors is an integer number (2192206940).

Almost surely, 2^28401886484 is an apocalyptic number.

It is an amenable number.

28401886484 is a deficient number, since it is larger than the sum of its proper divisors (24211080076).

28401886484 is a wasteful number, since it uses less digits than its factorization.

28401886484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694119 (or 5694117 counting only the distinct ones).

The product of its (nonzero) digits is 3145728, while the sum is 53.

The spelling of 28401886484 in words is "twenty-eight billion, four hundred one million, eight hundred eighty-six thousand, four hundred eighty-four".