28132692229 has 4 divisors (see below), whose sum is σ = 28141110976. Its totient is φ = 28124273484.

The previous prime is 28132692173. The next prime is 28132692253. The reversal of 28132692229 is 92229623182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28132692229 - 2²³ = 28124303621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132692299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4204359 + ... + 4211044.

It is an arithmetic number, because the mean of its divisors is an integer number (7035277744).

Almost surely, 2^28132692229 is an apocalyptic number.

It is an amenable number.

28132692229 is a deficient number, since it is larger than the sum of its proper divisors (8418747).

28132692229 is an equidigital number, since it uses as much as digits as its factorization.

28132692229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8418746.

The product of its digits is 373248, while the sum is 46.

The spelling of 28132692229 in words is "twenty-eight billion, one hundred thirty-two million, six hundred ninety-two thousand, two hundred twenty-nine".