97307388 has 144 divisors (see below), whose sum is σ = 281788416. Its totient is φ = 28131840.

The previous prime is 97307387. The next prime is 97307407. The reversal of 97307388 is 88370379.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97307387) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 436245 + ... + 436467.

It is an arithmetic number, because the mean of its divisors is an integer number (1956864).

Almost surely, 2^97307388 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 97307388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140894208).

97307388 is an abundant number, since it is smaller than the sum of its proper divisors (184481028).

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

97307388 is a wasteful number, since it uses less digits than its factorization.

97307388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 97307388 is about 9864.4507196296. The cubic root of 97307388 is about 459.9549231191.

The spelling of 97307388 in words is "ninety-seven million, three hundred seven thousand, three hundred eighty-eight".