897332240 has 40 divisors (see below), whose sum is σ = 2384341440. Its totient is φ = 307656576.

The previous prime is 897332237. The next prime is 897332257. The reversal of 897332240 is 42233798.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 897332194 and 897332203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800630 + ... + 801749.

It is an arithmetic number, because the mean of its divisors is an integer number (59608536).

Almost surely, 2^897332240 is an apocalyptic number.

897332240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

897332240 is an abundant number, since it is smaller than the sum of its proper divisors (1487009200).

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

897332240 is a wasteful number, since it uses less digits than its factorization.

897332240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602399 (or 1602393 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 897332240 is about 29955.5043355975. The cubic root of 897332240 is about 964.5344797545.

The spelling of 897332240 in words is "eight hundred ninety-seven million, three hundred thirty-two thousand, two hundred forty".