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2152142344 = 231171344453
BaseRepresentation
bin1000000001000111…
…0001011000001000
312112222122011021201
42000101301120020
513401422023334
6553315513544
7104221623322
oct20021613010
95488564251
102152142344
11a04912440
125008b88b4
13283b46411
14165b80612
15c8e16c14
hex80471608

2152142344 has 32 divisors (see below), whose sum is σ = 4464123840. Its totient is φ = 964465600.

The previous prime is 2152142263. The next prime is 2152142347. The reversal of 2152142344 is 4432412512.

It is not an unprimeable number, because it can be changed into a prime (2152142347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165979 + ... + 178474.

It is an arithmetic number, because the mean of its divisors is an integer number (139503870).

Almost surely, 22152142344 is an apocalyptic number.

It is an amenable number.

2152142344 is an abundant number, since it is smaller than the sum of its proper divisors (2311981496).

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

2152142344 is a wasteful number, since it uses less digits than its factorization.

2152142344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344541 (or 344537 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 2152142344 is about 46391.1882150048. The cubic root of 2152142344 is about 1291.0914273387.

Adding to 2152142344 its reverse (4432412512), we get a palindrome (6584554856).

The spelling of 2152142344 in words is "two billion, one hundred fifty-two million, one hundred forty-two thousand, three hundred forty-four".

Divisors: 1 2 4 8 11 22 44 71 88 142 284 568 781 1562 3124 6248 344453 688906 1377812 2755624 3788983 7577966 15155932 24456163 30311864 48912326 97824652 195649304 269017793 538035586 1076071172 2152142344