97181228 has 6 divisors (see below), whose sum is σ = 170067156. Its totient is φ = 48590612.

The previous prime is 97181207. The next prime is 97181251. The reversal of 97181228 is 82218179.

It is a junction number, because it is equal to n+sod(n) for n = 97181191 and 97181200.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12147650 + ... + 12147657.

It is an arithmetic number, because the mean of its divisors is an integer number (28344526).

Almost surely, 2^97181228 is an apocalyptic number.

It is an amenable number.

97181228 is a deficient number, since it is larger than the sum of its proper divisors (72885928).

97181228 is a wasteful number, since it uses less digits than its factorization.

97181228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24295311 (or 24295309 counting only the distinct ones).

The product of its digits is 16128, while the sum is 38.

The square root of 97181228 is about 9858.0539661741. The cubic root of 97181228 is about 459.7560584344.

The spelling of 97181228 in words is "ninety-seven million, one hundred eighty-one thousand, two hundred twenty-eight".