97278720 has 432 divisors, whose sum is σ = 402651648. Its totient is φ = 19783680.

The previous prime is 97278683. The next prime is 97278721. The reversal of 97278720 is 2787279.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (97278721) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2069737 + ... + 2069783.

It is an arithmetic number, because the mean of its divisors is an integer number (932064).

Almost surely, 2^97278720 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 97278720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201325824).

97278720 is an abundant number, since it is smaller than the sum of its proper divisors (305372928).

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

97278720 is a wasteful number, since it uses less digits than its factorization.

97278720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 97278720 is about 9862.9975159685. The cubic root of 97278720 is about 459.9097491499.

The spelling of 97278720 in words is "ninety-seven million, two hundred seventy-eight thousand, seven hundred twenty".