97988238 has 64 divisors (see below), whose sum is σ = 232269120. Its totient is φ = 30514176.

The previous prime is 97988201. The next prime is 97988239. The reversal of 97988238 is 83288979.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97988239) 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, 158506 + ... + 159122.

It is an arithmetic number, because the mean of its divisors is an integer number (3629205).

Almost surely, 2^97988238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97988238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116134560).

97988238 is an abundant number, since it is smaller than the sum of its proper divisors (134280882).

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

97988238 is a wasteful number, since it uses less digits than its factorization.

97988238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 812 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 97988238 is about 9898.9008480740. The cubic root of 97988238 is about 461.0251835864.

The spelling of 97988238 in words is "ninety-seven million, nine hundred eighty-eight thousand, two hundred thirty-eight".