897845428890 has 24 divisors (see below), whose sum is σ = 2334398115348. Its totient is φ = 239425447680.

The previous prime is 897845428889. The next prime is 897845428937. The reversal of 897845428890 is 98824548798.

897845428890 is a `hidden beast` number, since 8 + 9 + 7 + 8 + 454 + 2 + 88 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 754287039009 + 143558389881 = 868497^2 + 378891^2 .

It is a super-2 number, since 2×897845428890² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4988030071 + ... + 4988030250.

Almost surely, 2^897845428890 is an apocalyptic number.

897845428890 is an abundant number, since it is smaller than the sum of its proper divisors (1436552686458).

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

897845428890 is a wasteful number, since it uses less digits than its factorization.

897845428890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976060334 (or 9976060331 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 72.

The spelling of 897845428890 in words is "eight hundred ninety-seven billion, eight hundred forty-five million, four hundred twenty-eight thousand, eight hundred ninety".