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2750407681 = 721919315307
BaseRepresentation
bin1010001111101111…
…1110010000000001
321002200101012001011
42203323332100001
521113101021211
61132530440521
7125105036200
oct24373762001
97080335034
102750407681
111191595aaa
12649133141
1334aa85588
141c13d5237
151116e0921
hexa3efe401

2750407681 has 24 divisors (see below), whose sum is σ = 3385517280. Its totient is φ = 2221696512.

The previous prime is 2750407613. The next prime is 2750407697. The reversal of 2750407681 is 1867040572.

2750407681 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 2750407681 - 211 = 2750405633 is a prime.

It is a super-2 number, since 2×27504076812 = 15129484823407595522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2750407381) 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, 172030 + ... + 187336.

It is an arithmetic number, because the mean of its divisors is an integer number (141063220).

Almost surely, 22750407681 is an apocalyptic number.

It is an amenable number.

2750407681 is a deficient number, since it is larger than the sum of its proper divisors (635109599).

2750407681 is a wasteful number, since it uses less digits than its factorization.

2750407681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15533 (or 15526 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 2750407681 is about 52444.3293502739. The cubic root of 2750407681 is about 1401.0888945247.

The spelling of 2750407681 in words is "two billion, seven hundred fifty million, four hundred seven thousand, six hundred eighty-one".

Divisors: 1 7 19 49 133 193 931 1351 3667 9457 15307 25669 107149 179683 290833 750043 2035831 2954251 14250817 20679757 56130769 144758299 392915383 2750407681