28490562548 has 144 divisors (see below), whose sum is σ = 66395004480. Its totient is φ = 10592031744.

The previous prime is 28490562533. The next prime is 28490562613. The reversal of 28490562548 is 84526509482.

It is a self number, because there is not a number n which added to its sum of digits gives 28490562548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2336315 + ... + 2348477.

It is an arithmetic number, because the mean of its divisors is an integer number (461076420).

Almost surely, 2^28490562548 is an apocalyptic number.

28490562548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28490562548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33197502240).

28490562548 is an abundant number, since it is smaller than the sum of its proper divisors (37904441932).

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

28490562548 is a wasteful number, since it uses less digits than its factorization.

28490562548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12254 (or 12245 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 28490562548 in words is "twenty-eight billion, four hundred ninety million, five hundred sixty-two thousand, five hundred forty-eight".