28719242628 has 12 divisors (see below), whose sum is σ = 67011566160. Its totient is φ = 9573080872.

The previous prime is 28719242603. The next prime is 28719242633. The reversal of 28719242628 is 82624291782.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196635098 + ... + 1196635121.

It is an arithmetic number, because the mean of its divisors is an integer number (5584297180).

Almost surely, 2^28719242628 is an apocalyptic number.

It is an amenable number.

28719242628 is an abundant number, since it is smaller than the sum of its proper divisors (38292323532).

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

28719242628 is a wasteful number, since it uses less digits than its factorization.

28719242628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393270226 (or 2393270224 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The spelling of 28719242628 in words is "twenty-eight billion, seven hundred nineteen million, two hundred forty-two thousand, six hundred twenty-eight".