28558671450 has 96 divisors (see below), whose sum is σ = 76735999296. Its totient is φ = 7000949760.

The previous prime is 28558671431. The next prime is 28558671451. The reversal of 28558671450 is 5417685582.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 28558671393 and 28558671402.

It is not an unprimeable number, because it can be changed into a prime (28558671451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20577 + ... + 239876.

It is an arithmetic number, because the mean of its divisors is an integer number (799333326).

Almost surely, 2^28558671450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28558671450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38367999648).

28558671450 is an abundant number, since it is smaller than the sum of its proper divisors (48177327846).

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

28558671450 is a wasteful number, since it uses less digits than its factorization.

28558671450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260528 (or 260523 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 51.

The spelling of 28558671450 in words is "twenty-eight billion, five hundred fifty-eight million, six hundred seventy-one thousand, four hundred fifty".