97211712 has 224 divisors, whose sum is σ = 307238400. Its totient is φ = 26836992.

The previous prime is 97211701. The next prime is 97211713. The reversal of 97211712 is 21711279.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 97211712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97211713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1230489 + ... + 1230567.

It is an arithmetic number, because the mean of its divisors is an integer number (1371600).

Almost surely, 2^97211712 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 97211712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153619200).

97211712 is an abundant number, since it is smaller than the sum of its proper divisors (210026688).

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

97211712 is a wasteful number, since it uses less digits than its factorization.

97211712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 143 counting only the distinct ones).

The product of its digits is 1764, while the sum is 30.

The square root of 97211712 is about 9859.5999918861. The cubic root of 97211712 is about 459.8041258057.

The spelling of 97211712 in words is "ninety-seven million, two hundred eleven thousand, seven hundred twelve".