28299150945 has 24 divisors (see below), whose sum is σ = 52825082856. Its totient is φ = 13931889408.

The previous prime is 28299150937. The next prime is 28299150953. The reversal of 28299150945 is 54905199282.

28299150945 is a `hidden beast` number, since 2 + 8 + 2 + 9 + 91 + 509 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (28299150937) and next prime (28299150953).

It can be written as a sum of positive squares in 4 ways, for example, as 5471265024 + 22827885921 = 73968^2 + 151089^2 .

It is not a de Polignac number, because 28299150945 - 2³ = 28299150937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28299150891 and 28299150900.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24186724 + ... + 24187893.

It is an arithmetic number, because the mean of its divisors is an integer number (2201045119).

Almost surely, 2^28299150945 is an apocalyptic number.

It is an amenable number.

28299150945 is a deficient number, since it is larger than the sum of its proper divisors (24525931911).

28299150945 is a wasteful number, since it uses less digits than its factorization.

28299150945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48374641 (or 48374638 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 28299150945 in words is "twenty-eight billion, two hundred ninety-nine million, one hundred fifty thousand, nine hundred forty-five".