28768947950 has 48 divisors (see below), whose sum is σ = 54314336160. Its totient is φ = 11334960000.

The previous prime is 28768947881. The next prime is 28768947971. The reversal of 28768947950 is 5974986782.

It is a happy number.

It is a super-2 number, since 2×28768947950² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4615436 + ... + 4621664.

It is an arithmetic number, because the mean of its divisors is an integer number (1131548670).

Almost surely, 2^28768947950 is an apocalyptic number.

28768947950 is a deficient number, since it is larger than the sum of its proper divisors (25545388210).

28768947950 is a wasteful number, since it uses less digits than its factorization.

28768947950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7613 (or 7608 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 28768947950 in words is "twenty-eight billion, seven hundred sixty-eight million, nine hundred forty-seven thousand, nine hundred fifty".