97710228 has 144 divisors (see below), whose sum is σ = 311875200. Its totient is φ = 25056000.

The previous prime is 97710199. The next prime is 97710241. The reversal of 97710228 is 82201779.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 97710192 and 97710201.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 279798 + ... + 280146.

It is an arithmetic number, because the mean of its divisors is an integer number (2165800).

Almost surely, 2^97710228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97710228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155937600).

97710228 is an abundant number, since it is smaller than the sum of its proper divisors (214164972).

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

97710228 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (97710227) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (478).

97710228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 97710228 is about 9884.8484055144. The cubic root of 97710228 is about 460.5887672074.

The spelling of 97710228 in words is "ninety-seven million, seven hundred ten thousand, two hundred twenty-eight".