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4070181 = 31356727
BaseRepresentation
bin1111100001101100100101
321122210020110
433201230211
52020221211
6223123233
746411263
oct17415445
97583213
104070181
11232aa95
121443519
13ac67bb
1477d433
15555ea6
hex3e1b25

4070181 has 4 divisors (see below), whose sum is σ = 5426912. Its totient is φ = 2713452.

The previous prime is 4070167. The next prime is 4070197. The reversal of 4070181 is 1810704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4070181 - 26 = 4070117 is a prime.

It is a super-2 number, since 2×40701812 = 33132746745522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4070981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678361 + ... + 678366.

It is an arithmetic number, because the mean of its divisors is an integer number (1356728).

Almost surely, 24070181 is an apocalyptic number.

It is an amenable number.

4070181 is a deficient number, since it is larger than the sum of its proper divisors (1356731).

4070181 is a wasteful number, since it uses less digits than its factorization.

4070181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356730.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 4070181 is about 2017.4689588690. The cubic root of 4070181 is about 159.6631062433.

Adding to 4070181 its reverse (1810704), we get a palindrome (5880885).

The spelling of 4070181 in words is "four million, seventy thousand, one hundred eighty-one".

Divisors: 1 3 1356727 4070181