97257228 has 24 divisors (see below), whose sum is σ = 232212288. Its totient is φ = 31664976.

The previous prime is 97257203. The next prime is 97257233. The reversal of 97257228 is 82275279.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 97257228.

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 7 ways as a sum of consecutive naturals, for example, 93726 + ... + 94757.

It is an arithmetic number, because the mean of its divisors is an integer number (9675512).

Almost surely, 2^97257228 is an apocalyptic number.

It is an amenable number.

97257228 is an abundant number, since it is smaller than the sum of its proper divisors (134955060).

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

97257228 is a wasteful number, since it uses less digits than its factorization.

97257228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188533 (or 188531 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 97257228 is about 9861.9079289963. The cubic root of 97257228 is about 459.8758770336.

The spelling of 97257228 in words is "ninety-seven million, two hundred fifty-seven thousand, two hundred twenty-eight".