Search a number
-
+
2871138488 = 231941460709
BaseRepresentation
bin1010101100100010…
…0001100010111000
321102002112221120112
42223020201202320
521340002412423
61152522243452
7131102163101
oct25310414270
97362487515
102871138488
111243756929
12681656588
13369aa701a
141d34613a8
1511c0dca78
hexab2218b8

2871138488 has 32 divisors (see below), whose sum is σ = 5804946000. Its totient is φ = 1326839040.

The previous prime is 2871138463. The next prime is 2871138499. The reversal of 2871138488 is 8848311782.

It is a super-2 number, since 2×28711384882 = 16486872434549852288, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 224123 + ... + 236586.

Almost surely, 22871138488 is an apocalyptic number.

It is an amenable number.

2871138488 is an abundant number, since it is smaller than the sum of its proper divisors (2933807512).

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

2871138488 is a wasteful number, since it uses less digits than its factorization.

2871138488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460775 (or 460771 counting only the distinct ones).

The product of its digits is 688128, while the sum is 50.

The square root of 2871138488 is about 53583.0055894591. The cubic root of 2871138488 is about 1421.2965886654.

The spelling of 2871138488 in words is "two billion, eight hundred seventy-one million, one hundred thirty-eight thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 19 38 41 76 82 152 164 328 779 1558 3116 6232 460709 921418 1842836 3685672 8753471 17506942 18889069 35013884 37778138 70027768 75556276 151112552 358892311 717784622 1435569244 2871138488