28911097600 has 972 divisors, whose sum is σ = 99792597240. Its totient is φ = 8188723200.

The previous prime is 28911097597. The next prime is 28911097669. The reversal of 28911097600 is 679011982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 996934386 + ... + 996934414.

Almost surely, 2^28911097600 is an apocalyptic number.

28911097600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28911097600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49896298620).

28911097600 is an abundant number, since it is smaller than the sum of its proper divisors (70881499640).

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

28911097600 is a wasteful number, since it uses less digits than its factorization.

28911097600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 28911097600 in words is "twenty-eight billion, nine hundred eleven million, ninety-seven thousand, six hundred".