28645237392 has 80 divisors (see below), whose sum is σ = 78860666880. Its totient is φ = 8938923136.

The previous prime is 28645237363. The next prime is 28645237421. The reversal of 28645237392 is 29373254682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28645237363) and next prime (28645237421).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224142 + ... + 327917.

It is an arithmetic number, because the mean of its divisors is an integer number (985758336).

Almost surely, 2^28645237392 is an apocalyptic number.

It is an amenable number.

28645237392 is an abundant number, since it is smaller than the sum of its proper divisors (50215429488).

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

28645237392 is a wasteful number, since it uses less digits than its factorization.

28645237392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552140 (or 552134 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 51.

The spelling of 28645237392 in words is "twenty-eight billion, six hundred forty-five million, two hundred thirty-seven thousand, three hundred ninety-two".