28579577970 has 64 divisors (see below), whose sum is σ = 70855741440. Its totient is φ = 7369944000.

The previous prime is 28579577963. The next prime is 28579578017. The reversal of 28579577970 is 7977597582.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1338841 + ... + 1360019.

It is an arithmetic number, because the mean of its divisors is an integer number (1107120960).

Almost surely, 2^28579577970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28579577970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35427870720).

28579577970 is an abundant number, since it is smaller than the sum of its proper divisors (42276163470).

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

28579577970 is a wasteful number, since it uses less digits than its factorization.

28579577970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22671.

The product of its (nonzero) digits is 77792400, while the sum is 66.

The spelling of 28579577970 in words is "twenty-eight billion, five hundred seventy-nine million, five hundred seventy-seven thousand, nine hundred seventy".