28550306663424 has 704 divisors, whose sum is σ = 107421445447680. Its totient is φ = 7286836101120.

The previous prime is 28550306663363. The next prime is 28550306663449. The reversal of 28550306663424 is 42436660305582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77811982 + ... + 78178034.

Almost surely, 2^{28550306663424} is an apocalyptic number.

28550306663424 is a gapful number since it is divisible by the number (24) 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 28550306663424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53710722723840).

28550306663424 is an abundant number, since it is smaller than the sum of its proper divisors (78871138784256).

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

28550306663424 is a wasteful number, since it uses less digits than its factorization.

28550306663424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366133 (or 366109 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 54.

The spelling of 28550306663424 in words is "twenty-eight trillion, five hundred fifty billion, three hundred six million, six hundred sixty-three thousand, four hundred twenty-four".