28976891076 has 225 divisors, whose sum is σ = 88831533021. Its totient is φ = 8236214784.

The previous prime is 28976891063. The next prime is 28976891077. The reversal of 28976891076 is 67019867982.

The square root of 28976891076 is 170226.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7020764100 + 21956126976 = 83790^2 + 148176^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (28976891077) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 150139236 + ... + 150139428.

Almost surely, 2^28976891076 is an apocalyptic number.

28976891076 is the 170226-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28976891076

28976891076 is an abundant number, since it is smaller than the sum of its proper divisors (59854641945).

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

28976891076 is an frugal number, since it uses more digits than its factorization.

28976891076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 28976891076 in words is "twenty-eight billion, nine hundred seventy-six million, eight hundred ninety-one thousand, seventy-six".