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4787081 = 131721661
BaseRepresentation
bin10010010000101110001001
3100000012122022
4102100232021
52211141311
6250334225
755455335
oct22205611
910005568
104787081
11277a672
12172a375
13cb7bc0
148c87c5
156485db
hex490b89

4787081 has 8 divisors (see below), whose sum is σ = 5458824. Its totient is φ = 4158720.

The previous prime is 4787077. The next prime is 4787089. The reversal of 4787081 is 1807874.

It can be written as a sum of positive squares in 4 ways, for example, as 292681 + 4494400 = 541^2 + 2120^2 .

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 4787081 - 22 = 4787077 is a prime.

It is a super-2 number, since 2×47870812 = 45832289001122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4787089) 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, 10610 + ... + 11051.

It is an arithmetic number, because the mean of its divisors is an integer number (682353).

Almost surely, 24787081 is an apocalyptic number.

It is an amenable number.

4787081 is a deficient number, since it is larger than the sum of its proper divisors (671743).

4787081 is a wasteful number, since it uses less digits than its factorization.

4787081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21691.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 4787081 is about 2187.9398986261. The cubic root of 4787081 is about 168.5350594923.

The spelling of 4787081 in words is "four million, seven hundred eighty-seven thousand, eighty-one".

Divisors: 1 13 17 221 21661 281593 368237 4787081