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2381212242 = 23432574513
BaseRepresentation
bin1000110111101110…
…0110101001010010
320010221200010010000
42031323212221102
514334042242432
61032141350430
7113002653513
oct21573465122
96127603100
102381212242
111012150002
12565568416
132bc43b236
1418836ca0a
15de0b457c
hex8dee6a52

2381212242 has 40 divisors (see below), whose sum is σ = 5338500156. Its totient is φ = 793317888.

The previous prime is 2381212217. The next prime is 2381212313. The reversal of 2381212242 is 2422121832.

It can be written as a sum of positive squares in 2 ways, for example, as 2301984441 + 79227801 = 47979^2 + 8901^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 525378 + ... + 529890.

Almost surely, 22381212242 is an apocalyptic number.

2381212242 is an abundant number, since it is smaller than the sum of its proper divisors (2957287914).

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

2381212242 is a wasteful number, since it uses less digits than its factorization.

2381212242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7784 (or 7775 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 2381212242 is about 48797.6663581364. Note that the first 3 decimals coincide. The cubic root of 2381212242 is about 1335.3630927535.

The spelling of 2381212242 in words is "two billion, three hundred eighty-one million, two hundred twelve thousand, two hundred forty-two".

Divisors: 1 2 3 6 9 18 27 54 81 162 3257 4513 6514 9026 9771 13539 19542 27078 29313 40617 58626 81234 87939 121851 175878 243702 263817 365553 527634 731106 14698841 29397682 44096523 88193046 132289569 264579138 396868707 793737414 1190606121 2381212242