91228273600 has 84 divisors (see below), whose sum is σ = 224921597400. Its totient is φ = 36419292160.

The previous prime is 91228273597. The next prime is 91228273603. The reversal of 91228273600 is 637282219.

It is an interprime number because it is at equal distance from previous prime (91228273597) and next prime (91228273603).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91228273603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 758391 + ... + 870409.

Almost surely, 2^91228273600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91228273600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112460798700).

91228273600 is an abundant number, since it is smaller than the sum of its proper divisors (133693323800).

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

91228273600 is a wasteful number, since it uses less digits than its factorization.

91228273600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112550 (or 112535 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 91228273600 in words is "ninety-one billion, two hundred twenty-eight million, two hundred seventy-three thousand, six hundred".