28111230632 has 8 divisors (see below), whose sum is σ = 52708557450. Its totient is φ = 14055615312.

The previous prime is 28111230619. The next prime is 28111230701. The reversal of 28111230632 is 23603211182.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27193988836 + 917241796 = 164906^2 + 30286^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28111230595 and 28111230604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1756951907 + ... + 1756951922.

Almost surely, 2^28111230632 is an apocalyptic number.

It is an amenable number.

28111230632 is a deficient number, since it is larger than the sum of its proper divisors (24597326818).

28111230632 is a wasteful number, since it uses less digits than its factorization.

28111230632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513903835 (or 3513903831 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 28111230632 in words is "twenty-eight billion, one hundred eleven million, two hundred thirty thousand, six hundred thirty-two".