97447828 has 6 divisors (see below), whose sum is σ = 170533706. Its totient is φ = 48723912.

The previous prime is 97447811. The next prime is 97447829. The reversal of 97447828 is 82874479.

It can be written as a sum of positive squares in only one way, i.e., 96471684 + 976144 = 9822^2 + 988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97447829) by changing a digit.

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 as a sum of consecutive naturals, namely, 12180975 + ... + 12180982.

Almost surely, 2^97447828 is an apocalyptic number.

It is an amenable number.

97447828 is a deficient number, since it is larger than the sum of its proper divisors (73085878).

97447828 is a wasteful number, since it uses less digits than its factorization.

97447828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24361961 (or 24361959 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 97447828 is about 9871.5666436488. The cubic root of 97447828 is about 460.1760951503.

The spelling of 97447828 in words is "ninety-seven million, four hundred forty-seven thousand, eight hundred twenty-eight".