28132800135 has 32 divisors (see below), whose sum is σ = 49375872000. Its totient is φ = 13564771200.

The previous prime is 28132800131. The next prime is 28132800151. The reversal of 28132800135 is 53100823182.

It is not a de Polignac number, because 28132800135 - 2² = 28132800131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 28132800096 and 28132800105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132800131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441135 + ... + 500864.

It is an arithmetic number, because the mean of its divisors is an integer number (1542996000).

Almost surely, 2^28132800135 is an apocalyptic number.

28132800135 is a deficient number, since it is larger than the sum of its proper divisors (21243071865).

28132800135 is a wasteful number, since it uses less digits than its factorization.

28132800135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942199.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 28132800135 in words is "twenty-eight billion, one hundred thirty-two million, eight hundred thousand, one hundred thirty-five".