97323440 has 20 divisors (see below), whose sum is σ = 226277184. Its totient is φ = 38929344.

The previous prime is 97323439. The next prime is 97323461. The reversal of 97323440 is 4432379.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 97323397 and 97323406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608192 + ... + 608351.

Almost surely, 2^97323440 is an apocalyptic number.

It is an amenable number.

97323440 is an abundant number, since it is smaller than the sum of its proper divisors (128953744).

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

97323440 is a wasteful number, since it uses less digits than its factorization.

97323440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216556 (or 1216550 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 97323440 is about 9865.2643147561. The cubic root of 97323440 is about 459.9802133896.

The spelling of 97323440 in words is "ninety-seven million, three hundred twenty-three thousand, four hundred forty".