97228540 has 12 divisors (see below), whose sum is σ = 204179976. Its totient is φ = 38891408.

The previous prime is 97228511. The next prime is 97228583. The reversal of 97228540 is 4582279.

It is a self number, because there is not a number n which added to its sum of digits gives 97228540.

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 3 ways as a sum of consecutive naturals, for example, 2430694 + ... + 2430733.

It is an arithmetic number, because the mean of its divisors is an integer number (17014998).

Almost surely, 2^97228540 is an apocalyptic number.

It is an amenable number.

97228540 is an abundant number, since it is smaller than the sum of its proper divisors (106951436).

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

97228540 is a wasteful number, since it uses less digits than its factorization.

97228540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861436 (or 4861434 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 97228540 is about 9860.4533364344. The cubic root of 97228540 is about 459.8306560020.

The spelling of 97228540 in words is "ninety-seven million, two hundred twenty-eight thousand, five hundred forty".