28119457536 has 72 divisors (see below), whose sum is σ = 74962105680. Its totient is φ = 9357705216.

The previous prime is 28119457517. The next prime is 28119457537. The reversal of 28119457536 is 63575491182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28119457537) 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, 440920 + ... + 500648.

Almost surely, 2^28119457536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28119457536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37481052840).

28119457536 is an abundant number, since it is smaller than the sum of its proper divisors (46842648144).

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

28119457536 is an equidigital number, since it uses as much as digits as its factorization.

28119457536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60361 (or 60347 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The spelling of 28119457536 in words is "twenty-eight billion, one hundred nineteen million, four hundred fifty-seven thousand, five hundred thirty-six".