97629963228 has 126 divisors (see below), whose sum is σ = 292889889656. Its totient is φ = 27894275208.

The previous prime is 97629963191. The next prime is 97629963259. The reversal of 97629963228 is 82236992679.

It is a tau number, because it is divible by the number of its divisors (126).

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (35271936) is a multiple of the sum of its prime divisors (12).

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 13947137601 + ... + 13947137607.

Almost surely, 2^97629963228 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 97629963228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146444944828).

97629963228 is an abundant number, since it is smaller than the sum of its proper divisors (195259926428).

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

97629963228 is an frugal number, since it uses more digits than its factorization.

97629963228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 12 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

Multiplying 97629963228 by its sum of digits (63), we get a square (6150687683364 = 2480058²).

97629963228 divided by its sum of digits (63) gives a square (1549681956 = 39366²).

The spelling of 97629963228 in words is "ninety-seven billion, six hundred twenty-nine million, nine hundred sixty-three thousand, two hundred twenty-eight".