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2817997213 = 68315672633
BaseRepresentation
bin1010011111110111…
…0011100110011101
321021101120002110011
42213331303212131
521232401402323
61143343243221
7126555403213
oct24775634635
97241502404
102817997213
111216760019
126678a9511
1335ba8bb95
141ca38acb3
151175e220d
hexa7f7399d

2817997213 has 8 divisors (see below), whose sum is σ = 2824996608. Its totient is φ = 2811007584.

The previous prime is 2817997139. The next prime is 2817997223. The reversal of 2817997213 is 3127997182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2817997213 - 213 = 2817989021 is a prime.

It is a super-2 number, since 2×28179972132 = 15882216584951534738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2817997223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068945 + ... + 1071577.

It is an arithmetic number, because the mean of its divisors is an integer number (353124576).

Almost surely, 22817997213 is an apocalyptic number.

It is an amenable number.

2817997213 is a deficient number, since it is larger than the sum of its proper divisors (6999395).

2817997213 is a wasteful number, since it uses less digits than its factorization.

2817997213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4883.

The product of its digits is 381024, while the sum is 49.

The square root of 2817997213 is about 53084.8115095081. The cubic root of 2817997213 is about 1412.4731026596.

The spelling of 2817997213 in words is "two billion, eight hundred seventeen million, nine hundred ninety-seven thousand, two hundred thirteen".

Divisors: 1 683 1567 2633 1070261 1798339 4125911 2817997213