97273728 has 96 divisors (see below), whose sum is σ = 296440560. Its totient is φ = 30511104.

The previous prime is 97273681. The next prime is 97273769. The reversal of 97273728 is 82737279.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17101 + ... + 22067.

Almost surely, 2^97273728 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 97273728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148220280).

97273728 is an abundant number, since it is smaller than the sum of its proper divisors (199166832).

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

97273728 is a wasteful number, since it uses less digits than its factorization.

97273728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004 (or 4989 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 97273728 is about 9862.7444456399. The cubic root of 97273728 is about 459.9018820345.

The spelling of 97273728 in words is "ninety-seven million, two hundred seventy-three thousand, seven hundred twenty-eight".