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718234868 = 221313812209
BaseRepresentation
bin101010110011110…
…110010011110100
31212001111010000102
4222303312103310
52432332003433
6155134133232
723540616131
oct5263662364
91761433012
10718234868
1133947453a
12180651218
13b5a55260
146b563588
15430c54e8
hex2acf64f4

718234868 has 12 divisors (see below), whose sum is σ = 1353596580. Its totient is φ = 331492992.

The previous prime is 718234837. The next prime is 718234883. The reversal of 718234868 is 868432817.

It can be written as a sum of positive squares in 2 ways, for example, as 426918244 + 291316624 = 20662^2 + 17068^2 .

It is a super-2 number, since 2×7182348682 = 1031722651221954848, 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6906053 + ... + 6906156.

It is an arithmetic number, because the mean of its divisors is an integer number (112799715).

Almost surely, 2718234868 is an apocalyptic number.

It is an amenable number.

718234868 is a deficient number, since it is larger than the sum of its proper divisors (635361712).

718234868 is a wasteful number, since it uses less digits than its factorization.

718234868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13812226 (or 13812224 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 718234868 is about 26799.9042535603. The cubic root of 718234868 is about 895.5479174650.

The spelling of 718234868 in words is "seven hundred eighteen million, two hundred thirty-four thousand, eight hundred sixty-eight".

Divisors: 1 2 4 13 26 52 13812209 27624418 55248836 179558717 359117434 718234868