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1144231320 = 2335139181379
BaseRepresentation
bin100010000110011…
…1001010110011000
32221202001222021210
41010030321112120
54320410400240
6305312503120
740232543241
oct10414712630
92852058253
101144231320
11537985a21
1227b24aaa0
1315309946b
14abd73cc8
156a6c1780
hex44339598

1144231320 has 128 divisors (see below), whose sum is σ = 3485664000. Its totient is φ = 300464640.

The previous prime is 1144231313. The next prime is 1144231379. The reversal of 1144231320 is 231324411.

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 31 ways as a sum of consecutive naturals, for example, 3018891 + ... + 3019269.

It is an arithmetic number, because the mean of its divisors is an integer number (27231750).

Almost surely, 21144231320 is an apocalyptic number.

1144231320 is a gapful number since it is divisible by the number (10) 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 1144231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742832000).

1144231320 is an abundant number, since it is smaller than the sum of its proper divisors (2341432680).

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

1144231320 is a wasteful number, since it uses less digits than its factorization.

1144231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1144231320 is about 33826.4884373179. The cubic root of 1144231320 is about 1045.9347938299.

Adding to 1144231320 its reverse (231324411), we get a palindrome (1375555731).

The spelling of 1144231320 in words is "one billion, one hundred forty-four million, two hundred thirty-one thousand, three hundred twenty".