28668201072 has 120 divisors (see below), whose sum is σ = 90685267200. Its totient is φ = 7759801728.

The previous prime is 28668200969. The next prime is 28668201077. The reversal of 28668201072 is 27010286682.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28668201077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276072 + ... + 365447.

It is an arithmetic number, because the mean of its divisors is an integer number (755710560).

Almost surely, 2^28668201072 is an apocalyptic number.

It is an amenable number.

28668201072 is an abundant number, since it is smaller than the sum of its proper divisors (62017066128).

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

28668201072 is a wasteful number, since it uses less digits than its factorization.

28668201072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641563 (or 641550 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 28668201072 in words is "twenty-eight billion, six hundred sixty-eight million, two hundred one thousand, seventy-two".