Search a number
2230831840 = 25515788807
BaseRepresentation
bin1000010011110111…
…1100101011100000
312202110200222222111
42010331330223200
514032043104330
61005210245104
7106165520626
oct20475745340
95673628874
102230831840
11a45278a86
12523126794
13297238153
141723c5516
15d0cac32a
hex84f7cae0

2230831840 has 48 divisors (see below), whose sum is σ = 5303968992. Its totient is φ = 886639104.

The previous prime is 2230831807. The next prime is 2230831859. The reversal of 2230831840 is 481380322.

2230831840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×22308318403 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19284 + ... + 69523.

It is an arithmetic number, because the mean of its divisors is an integer number (110499354).

Almost surely, 22230831840 is an apocalyptic number.

2230831840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2230831840 is an abundant number, since it is smaller than the sum of its proper divisors (3073137152).

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

2230831840 is a wasteful number, since it uses less digits than its factorization.

2230831840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88979 (or 88971 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 2230831840 is about 47231.6825870093. The cubic root of 2230831840 is about 1306.6389843272.

The spelling of 2230831840 in words is "two billion, two hundred thirty million, eight hundred thirty-one thousand, eight hundred forty".