28766377072 has 40 divisors (see below), whose sum is σ = 57853922112. Its totient is φ = 13846368000.

The previous prime is 28766377069. The next prime is 28766377091. The reversal of 28766377072 is 27077366782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267679 + ... + 359422.

Almost surely, 2^28766377072 is an apocalyptic number.

It is an amenable number.

28766377072 is an abundant number, since it is smaller than the sum of its proper divisors (29087545040).

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

28766377072 is a wasteful number, since it uses less digits than its factorization.

28766377072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627217 (or 627211 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 55.

The spelling of 28766377072 in words is "twenty-eight billion, seven hundred sixty-six million, three hundred seventy-seven thousand, seventy-two".