Search a number
-
+
8077385 = 51615477
BaseRepresentation
bin11110110100000001001001
3120012101002102
4132310001021
54031434020
6445043145
7125441141
oct36640111
916171072
108077385
114617728
1228564b5
13189a724
141103921
15a98475
hex7b4049

8077385 has 4 divisors (see below), whose sum is σ = 9692868. Its totient is φ = 6461904.

The previous prime is 8077379. The next prime is 8077387. The reversal of 8077385 is 5837708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6431296 + 1646089 = 2536^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 8077385 - 28 = 8077129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8077387) 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, 807734 + ... + 807743.

It is an arithmetic number, because the mean of its divisors is an integer number (2423217).

Almost surely, 28077385 is an apocalyptic number.

It is an amenable number.

8077385 is a deficient number, since it is larger than the sum of its proper divisors (1615483).

8077385 is a wasteful number, since it uses less digits than its factorization.

8077385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615482.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 8077385 is about 2842.0740665929. The cubic root of 8077385 is about 200.6428067838.

It can be divided in two parts, 807 and 7385, that added together give a 13-th power (8192 = 213).

The spelling of 8077385 in words is "eight million, seventy-seven thousand, three hundred eighty-five".

Divisors: 1 5 1615477 8077385