97140288 has 56 divisors (see below), whose sum is σ = 293737792. Its totient is φ = 27753984.

The previous prime is 97140287. The next prime is 97140301. The reversal of 97140288 is 88204179.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97140287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34795 + ... + 37482.

Almost surely, 2^97140288 is an apocalyptic number.

It is an amenable number.

97140288 is an abundant number, since it is smaller than the sum of its proper divisors (196597504).

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

97140288 is a wasteful number, since it uses less digits than its factorization.

97140288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72299 (or 72289 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 97140288 is about 9855.9772727011. The cubic root of 97140288 is about 459.6914881562.

The spelling of 97140288 in words is "ninety-seven million, one hundred forty thousand, two hundred eighty-eight".