28919071372 has 12 divisors (see below), whose sum is σ = 53271973720. Its totient is φ = 13698507456.

The previous prime is 28919071369. The next prime is 28919071373. The reversal of 28919071372 is 27317091982.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28919071373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190256973 + ... + 190257124.

Almost surely, 2^28919071372 is an apocalyptic number.

It is an amenable number.

28919071372 is a deficient number, since it is larger than the sum of its proper divisors (24352902348).

28919071372 is a wasteful number, since it uses less digits than its factorization.

28919071372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380514120 (or 380514118 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 28919071372 in words is "twenty-eight billion, nine hundred nineteen million, seventy-one thousand, three hundred seventy-two".