28287017452 has 24 divisors (see below), whose sum is σ = 51678266976. Its totient is φ = 13522363008.

The previous prime is 28287017399. The next prime is 28287017453. The reversal of 28287017452 is 25471078282.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (28287017453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134128 + ... + 273064.

It is an arithmetic number, because the mean of its divisors is an integer number (2153261124).

Almost surely, 2^28287017452 is an apocalyptic number.

It is an amenable number.

28287017452 is a deficient number, since it is larger than the sum of its proper divisors (23391249524).

28287017452 is a wasteful number, since it uses less digits than its factorization.

28287017452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141177 (or 141175 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 28287017452 in words is "twenty-eight billion, two hundred eighty-seven million, seventeen thousand, four hundred fifty-two".