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2811072069 = 3213160714951
BaseRepresentation
bin1010011110001101…
…1000111001000101
321020220112020221100
42213203120321011
521224113301234
61142535010313
7126442501251
oct24743307105
97226466840
102811072069
111212860063
12665509999
1335a505a70
141c94a7261
15116bc5399
hexa78d8e45

2811072069 has 24 divisors (see below), whose sum is σ = 4375792512. Its totient is φ = 1728698400.

The previous prime is 2811072041. The next prime is 2811072073. The reversal of 2811072069 is 9602701182.

2811072069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2811072069 - 25 = 2811072037 is a prime.

It is a super-2 number, since 2×28110720692 = 15804252354223881522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2811072769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180544 + ... + 195494.

It is an arithmetic number, because the mean of its divisors is an integer number (182324688).

Almost surely, 22811072069 is an apocalyptic number.

It is an amenable number.

2811072069 is a deficient number, since it is larger than the sum of its proper divisors (1564720443).

2811072069 is a wasteful number, since it uses less digits than its factorization.

2811072069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16577 (or 16574 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 2811072069 is about 53019.5442172035. The cubic root of 2811072069 is about 1411.3151167454.

The spelling of 2811072069 in words is "two billion, eight hundred eleven million, seventy-two thousand, sixty-nine".

Divisors: 1 3 9 13 39 117 1607 4821 14463 14951 20891 44853 62673 134559 188019 194363 583089 1749267 24026257 72078771 216236313 312341341 937024023 2811072069