28211153004 has 36 divisors (see below), whose sum is σ = 71316685440. Its totient is φ = 9403037280.

The previous prime is 28211152969. The next prime is 28211153021. The reversal of 28211153004 is 40035111282.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 842869 + ... + 875699.

It is an arithmetic number, because the mean of its divisors is an integer number (1981019040).

Almost surely, 2^28211153004 is an apocalyptic number.

It is an amenable number.

28211153004 is an abundant number, since it is smaller than the sum of its proper divisors (43105532436).

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

28211153004 is a wasteful number, since it uses less digits than its factorization.

28211153004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56710 (or 56705 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 28211153004 its reverse (40035111282), we get a palindrome (68246264286).

The spelling of 28211153004 in words is "twenty-eight billion, two hundred eleven million, one hundred fifty-three thousand, four".