97810180 has 48 divisors (see below), whose sum is σ = 234223920. Its totient is φ = 33988608.

The previous prime is 97810147. The next prime is 97810187. The reversal of 97810180 is 8101879.

It can be written as a sum of positive squares in 8 ways, for example, as 2903616 + 94906564 = 1704^2 + 9742^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (97810187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6645 + ... + 15484.

It is an arithmetic number, because the mean of its divisors is an integer number (4879665).

Almost surely, 2^97810180 is an apocalyptic number.

It is an amenable number.

97810180 is an abundant number, since it is smaller than the sum of its proper divisors (136413740).

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

97810180 is a wasteful number, since it uses less digits than its factorization.

97810180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22168 (or 22166 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 97810180 is about 9889.9029317785. The cubic root of 97810180 is about 460.7457657143.

The spelling of 97810180 in words is "ninety-seven million, eight hundred ten thousand, one hundred eighty".