28058221132 has 24 divisors (see below), whose sum is σ = 52053203664. Its totient is φ = 13187876352.

The previous prime is 28058221097. The next prime is 28058221133. The reversal of 28058221132 is 23112285082.

It is a super-2 number, since 2×28058221132² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (28058221133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193233 + ... + 305704.

It is an arithmetic number, because the mean of its divisors is an integer number (2168883486).

Almost surely, 2^28058221132 is an apocalyptic number.

It is an amenable number.

28058221132 is a deficient number, since it is larger than the sum of its proper divisors (23994982532).

28058221132 is a wasteful number, since it uses less digits than its factorization.

28058221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499785 (or 499783 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 28058221132 in words is "twenty-eight billion, fifty-eight million, two hundred twenty-one thousand, one hundred thirty-two".