Search a number
-
+
8006144 = 2919823
BaseRepresentation
bin11110100010101000000000
3120001202100212
4132202220000
54022144034
6443333252
7125023346
oct36425000
916052325
108006144
114579153
122821228
131874183
1410c5996
15a822ce
hex7a2a00

8006144 has 40 divisors (see below), whose sum is σ = 16859040. Its totient is φ = 3787776.

The previous prime is 8006137. The next prime is 8006149. The reversal of 8006144 is 4416008.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8006149) 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, 9317 + ... + 10139.

It is an arithmetic number, because the mean of its divisors is an integer number (421476).

Almost surely, 28006144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8006144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8429520).

8006144 is an abundant number, since it is smaller than the sum of its proper divisors (8852896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8006144 is an equidigital number, since it uses as much as digits as its factorization.

8006144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 8006144 is about 2829.5130323079. The cubic root of 8006144 is about 200.0511868984.

The spelling of 8006144 in words is "eight million, six thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 19 32 38 64 76 128 152 256 304 512 608 823 1216 1646 2432 3292 4864 6584 9728 13168 15637 26336 31274 52672 62548 105344 125096 210688 250192 421376 500384 1000768 2001536 4003072 8006144