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2827994238 = 232198268989
BaseRepresentation
bin1010100010001111…
…1100010001111110
321022002100222210100
42220203330101332
521242431303423
61144341421530
7130036361106
oct25043742176
97262328710
102827994238
111221368a23
1266b10a8a6
13360b7c294
141cb830206
15118419343
hexa88fc47e

2827994238 has 24 divisors (see below), whose sum is σ = 6449812200. Its totient is φ = 893050704.

The previous prime is 2827994237. The next prime is 2827994261. The reversal of 2827994238 is 8324997282.

It is a happy number.

It is a super-2 number, since 2×28279942382 = 15995102820322401288, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2827994237) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4134153 + ... + 4134836.

It is an arithmetic number, because the mean of its divisors is an integer number (268742175).

Almost surely, 22827994238 is an apocalyptic number.

2827994238 is an abundant number, since it is smaller than the sum of its proper divisors (3621817962).

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

2827994238 is a wasteful number, since it uses less digits than its factorization.

2827994238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8269016 (or 8269013 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 2827994238 is about 53178.8890256275. The cubic root of 2827994238 is about 1414.1414109010.

The spelling of 2827994238 in words is "two billion, eight hundred twenty-seven million, nine hundred ninety-four thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 8268989 16537978 24806967 49613934 74420901 148841802 157110791 314221582 471332373 942664746 1413997119 2827994238