97171828 has 18 divisors (see below), whose sum is σ = 183265586. Its totient is φ = 44815728.

The previous prime is 97171819. The next prime is 97171829. The reversal of 97171828 is 82817179.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 67272804 + 29899024 = 8202^2 + 5468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97171829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70401 + ... + 71767.

Almost surely, 2^97171828 is an apocalyptic number.

It is an amenable number.

97171828 is a deficient number, since it is larger than the sum of its proper divisors (86093758).

97171828 is a wasteful number, since it uses less digits than its factorization.

97171828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751 (or 1382 counting only the distinct ones).

The product of its digits is 56448, while the sum is 43.

The square root of 97171828 is about 9857.5771871185. The cubic root of 97171828 is about 459.7412344251.

The spelling of 97171828 in words is "ninety-seven million, one hundred seventy-one thousand, eight hundred twenty-eight".