[go: up one dir, main page]

Search a number
-
+
40000161 = 313333387
BaseRepresentation
bin1001100010010…
…1101010100001
32210021012220110
42120211222201
540220001121
63545201533
7663665355
oct230455241
983235813
1040000161
1120640793
12114902a9
138396946
145453465
1537a1d76
hex2625aa1

40000161 has 4 divisors (see below), whose sum is σ = 53333552. Its totient is φ = 26666772.

The previous prime is 40000159. The next prime is 40000183. The reversal of 40000161 is 16100004.

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 40000161 - 21 = 40000159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40000061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6666691 + ... + 6666696.

It is an arithmetic number, because the mean of its divisors is an integer number (13333388).

Almost surely, 240000161 is an apocalyptic number.

It is an amenable number.

40000161 is a deficient number, since it is larger than the sum of its proper divisors (13333391).

40000161 is a wasteful number, since it uses less digits than its factorization.

40000161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13333390.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 40000161 is about 6324.5680484915. The cubic root of 40000161 is about 341.9956481783.

Adding to 40000161 its reverse (16100004), we get a palindrome (56100165).

The spelling of 40000161 in words is "forty million, one hundred sixty-one", and thus it is an aban number.

Divisors: 1 3 13333387 40000161