28601667764 has 24 divisors (see below), whose sum is σ = 52375319808. Its totient is φ = 13649929920.

The previous prime is 28601667751. The next prime is 28601667767. The reversal of 28601667764 is 46776610682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28601667767) 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, 1570802 + ... + 1588905.

It is an arithmetic number, because the mean of its divisors is an integer number (2182304992).

Almost surely, 2^28601667764 is an apocalyptic number.

It is an amenable number.

28601667764 is a deficient number, since it is larger than the sum of its proper divisors (23773652044).

28601667764 is a wasteful number, since it uses less digits than its factorization.

28601667764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159815 (or 3159813 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 28601667764 in words is "twenty-eight billion, six hundred one million, six hundred sixty-seven thousand, seven hundred sixty-four".