Search a number
-
+
4069081 = 71223257
BaseRepresentation
bin1111100001011011011001
321122201201201
433201123121
52020202311
6223114201
746405132
oct17413331
97581651
104069081
11232a185
121442961
13ac6153
1477cc89
155559c1
hex3e16d9

4069081 has 8 divisors (see below), whose sum is σ = 4161024. Its totient is φ = 3978240.

The previous prime is 4069073. The next prime is 4069099. The reversal of 4069081 is 1809604.

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 4069081 - 23 = 4069073 is a prime.

It is a super-2 number, since 2×40690812 = 33114840369122, which contains 22 as substring.

It is a Duffinian number.

4069081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4069381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15705 + ... + 15961.

It is an arithmetic number, because the mean of its divisors is an integer number (520128).

Almost surely, 24069081 is an apocalyptic number.

It is an amenable number.

4069081 is a deficient number, since it is larger than the sum of its proper divisors (91943).

4069081 is a wasteful number, since it uses less digits than its factorization.

4069081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 4069081 is about 2017.1963216306. The cubic root of 4069081 is about 159.6487215234.

The spelling of 4069081 in words is "four million, sixty-nine thousand, eighty-one".

Divisors: 1 71 223 257 15833 18247 57311 4069081