28922575052 has 72 divisors (see below), whose sum is σ = 60617168640. Its totient is φ = 11825805600.

The previous prime is 28922575051. The next prime is 28922575057. The reversal of 28922575052 is 25057522982.

It is a junction number, because it is equal to n+sod(n) for n = 28922574988 and 28922575006.

It is not an unprimeable number, because it can be changed into a prime (28922575051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1902899 + ... + 1918037.

It is an arithmetic number, because the mean of its divisors is an integer number (841905120).

Almost surely, 2^28922575052 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 28922575052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30308584320).

28922575052 is an abundant number, since it is smaller than the sum of its proper divisors (31694593588).

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

28922575052 is a wasteful number, since it uses less digits than its factorization.

28922575052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15283 (or 15250 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 47.

The spelling of 28922575052 in words is "twenty-eight billion, nine hundred twenty-two million, five hundred seventy-five thousand, fifty-two".