Search a number
-
+
8067021 = 32689007
BaseRepresentation
bin11110110001011111001101
3120011211212120
4132301133031
54031121041
6444523153
7125366004
oct36613715
916154776
108067021
11460a966
1228504b9
131895ab1
1410ddc3b
15a95366
hex7b17cd

8067021 has 4 divisors (see below), whose sum is σ = 10756032. Its totient is φ = 5378012.

The previous prime is 8066977. The next prime is 8067023. The reversal of 8067021 is 1207608.

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 a cyclic number.

It is not a de Polignac number, because 8067021 - 213 = 8058829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8066982 and 8067000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8067023) 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, 1344501 + ... + 1344506.

It is an arithmetic number, because the mean of its divisors is an integer number (2689008).

Almost surely, 28067021 is an apocalyptic number.

It is an amenable number.

8067021 is a deficient number, since it is larger than the sum of its proper divisors (2689011).

8067021 is a wasteful number, since it uses less digits than its factorization.

8067021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689010.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 8067021 is about 2840.2501650383. The cubic root of 8067021 is about 200.5569558943.

The spelling of 8067021 in words is "eight million, sixty-seven thousand, twenty-one".

Divisors: 1 3 2689007 8067021