2287643904 has 288 divisors, whose sum is σ = 8328400640. Its totient is φ = 603168768.

The previous prime is 2287643893. The next prime is 2287643921. The reversal of 2287643904 is 4093467822.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×2287643904² = 10466629263016722432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2287643904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627174 + ... + 630810.

Almost surely, 2^2287643904 is an apocalyptic number.

2287643904 is a gapful number since it is divisible by the number (24) 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 2287643904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4164200320).

2287643904 is an abundant number, since it is smaller than the sum of its proper divisors (6040756736).

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

2287643904 is a wasteful number, since it uses less digits than its factorization.

2287643904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682 (or 3662 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 2287643904 is about 47829.3205471288. The cubic root of 2287643904 is about 1317.6380903451.

The spelling of 2287643904 in words is "two billion, two hundred eighty-seven million, six hundred forty-three thousand, nine hundred four".