8573091840 has 680 divisors, whose sum is σ = 34256716560. Its totient is φ = 2038431744.

The previous prime is 8573091773. The next prime is 8573091851. The reversal of 8573091840 is 481903758.

It is a tau number, because it is divible by the number of its divisors (680).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 451215351 + ... + 451215369.

Almost surely, 2^8573091840 is an apocalyptic number.

8573091840 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 8573091840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17128358280).

8573091840 is an abundant number, since it is smaller than the sum of its proper divisors (25683624720).

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

8573091840 is an equidigital number, since it uses as much as digits as its factorization.

8573091840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 8573091840 is about 92590.9922184658. The cubic root of 8573091840 is about 2046.6605825286.

The spelling of 8573091840 in words is "eight billion, five hundred seventy-three million, ninety-one thousand, eight hundred forty".