28338753456 has 120 divisors (see below), whose sum is σ = 85511776896. Its totient is φ = 8709212160.

The previous prime is 28338753437. The next prime is 28338753481. The reversal of 28338753456 is 65435783382.

It is a happy number.

28338753456 is a `hidden beast` number, since 28 + 3 + 3 + 87 + 534 + 5 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1640641 + ... + 1657823.

Almost surely, 2^28338753456 is an apocalyptic number.

28338753456 is a gapful number since it is divisible by the number (26) 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 28338753456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42755888448).

28338753456 is an abundant number, since it is smaller than the sum of its proper divisors (57173023440).

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

28338753456 is a wasteful number, since it uses less digits than its factorization.

28338753456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18091 (or 18082 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 28338753456 in words is "twenty-eight billion, three hundred thirty-eight million, seven hundred fifty-three thousand, four hundred fifty-six".