898905047040 has 3072 divisors, whose sum is σ = 4518454752000. Its totient is φ = 166471925760.

The previous prime is 898905047039. The next prime is 898905047081. The reversal of 898905047040 is 40740509898.

898905047040 is a `hidden beast` number, since 8 + 9 + 8 + 90 + 504 + 7 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (3072).

It is a super-2 number, since 2×898905047040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 191 ways as a sum of consecutive naturals, for example, 30996725746 + ... + 30996725774.

Almost surely, 2^898905047040 is an apocalyptic number.

898905047040 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 898905047040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2259227376000).

898905047040 is an abundant number, since it is smaller than the sum of its proper divisors (3619549704960).

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

898905047040 is a wasteful number, since it uses less digits than its factorization.

898905047040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 898905047040 in words is "eight hundred ninety-eight billion, nine hundred five million, forty-seven thousand, forty".