897318240 has 192 divisors, whose sum is σ = 3479003136. Its totient is φ = 189315072.

The previous prime is 897318211. The next prime is 897318241. The reversal of 897318240 is 42813798.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 897318192 and 897318201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897318241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33409 + ... + 53951.

It is an arithmetic number, because the mean of its divisors is an integer number (18119808).

Almost surely, 2^897318240 is an apocalyptic number.

897318240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897318240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739501568).

897318240 is an abundant number, since it is smaller than the sum of its proper divisors (2581684896).

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

897318240 is a wasteful number, since it uses less digits than its factorization.

897318240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20581 (or 20573 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 897318240 is about 29955.2706547612. The cubic root of 897318240 is about 964.5294635697.

The spelling of 897318240 in words is "eight hundred ninety-seven million, three hundred eighteen thousand, two hundred forty".