897478728 has 32 divisors (see below), whose sum is σ = 2265917760. Its totient is φ = 296196800.

The previous prime is 897478723. The next prime is 897478741. The reversal of 897478728 is 827874798.

It is a happy number.

897478728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (897478721) 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, 182700 + ... + 187547.

It is an arithmetic number, because the mean of its divisors is an integer number (70809930).

Almost surely, 2^897478728 is an apocalyptic number.

It is an amenable number.

897478728 is an abundant number, since it is smaller than the sum of its proper divisors (1368439032).

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

897478728 is a wasteful number, since it uses less digits than its factorization.

897478728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370357 (or 370353 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 60.

The square root of 897478728 is about 29957.9493290178. The cubic root of 897478728 is about 964.5869631167.

The spelling of 897478728 in words is "eight hundred ninety-seven million, four hundred seventy-eight thousand, seven hundred twenty-eight".