28634638050 has 90 divisors (see below), whose sum is σ = 79591805073. Its totient is φ = 7633031760.

The previous prime is 28634638027. The next prime is 28634638063. The reversal of 28634638050 is 5083643682.

It is a happy number.

28634638050 is a `hidden beast` number, since 2 + 8 + 6 + 3 + 4 + 638 + 0 + 5 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28061945289 + 572692761 = 167517^2 + 23931^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=119655.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 28634637987 and 28634638005.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 10767621 + ... + 10770279.

Almost surely, 2^28634638050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28634638050

28634638050 is an abundant number, since it is smaller than the sum of its proper divisors (50957167023).

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

28634638050 is an frugal number, since it uses more digits than its factorization.

28634638050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5342 (or 2669 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 28634638050 in words is "twenty-eight billion, six hundred thirty-four million, six hundred thirty-eight thousand, fifty".