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2155234516 = 22877614377
BaseRepresentation
bin1000000001110110…
…0100010011010100
312120012110020221121
42000131210103110
513403220001031
6553510053324
7104260122361
oct20035442324
95505406847
102155234516
11a06634656
1250194a244
132846899c6
14166347468
15c9328011
hex807644d4

2155234516 has 12 divisors (see below), whose sum is σ = 3775967188. Its totient is φ = 1076386752.

The previous prime is 2155234511. The next prime is 2155234531. The reversal of 2155234516 is 6154325512.

It can be written as a sum of positive squares in 2 ways, for example, as 1082410000 + 1072824516 = 32900^2 + 32754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155234511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303681 + ... + 310696.

Almost surely, 22155234516 is an apocalyptic number.

It is an amenable number.

2155234516 is a deficient number, since it is larger than the sum of its proper divisors (1620732672).

2155234516 is a wasteful number, since it uses less digits than its factorization.

2155234516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615258 (or 615256 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 2155234516 is about 46424.5034006827. The cubic root of 2155234516 is about 1291.7094729308.

The spelling of 2155234516 in words is "two billion, one hundred fifty-five million, two hundred thirty-four thousand, five hundred sixteen".

Divisors: 1 2 4 877 1754 3508 614377 1228754 2457508 538808629 1077617258 2155234516