28108130742 has 12 divisors (see below), whose sum is σ = 60900949980. Its totient is φ = 9369376908.

The previous prime is 28108130657. The next prime is 28108130747. The reversal of 28108130742 is 24703180182.

It is a junction number, because it is equal to n+sod(n) for n = 28108130697 and 28108130706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28108130747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 780781392 + ... + 780781427.

It is an arithmetic number, because the mean of its divisors is an integer number (5075079165).

Almost surely, 2^28108130742 is an apocalyptic number.

28108130742 is an abundant number, since it is smaller than the sum of its proper divisors (32792819238).

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

28108130742 is a wasteful number, since it uses less digits than its factorization.

28108130742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561562827 (or 1561562824 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 28108130742 in words is "twenty-eight billion, one hundred eight million, one hundred thirty thousand, seven hundred forty-two".