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8078013 = 32897557
BaseRepresentation
bin11110110100001010111101
3120012101221200
4132310022331
54031444023
6445050113
7125443026
oct36641275
916171850
108078013
114618149
122856939
13189aab8
141103c4d
15a98743
hex7b42bd

8078013 has 6 divisors (see below), whose sum is σ = 11668254. Its totient is φ = 5385336.

The previous prime is 8078003. The next prime is 8078017. The reversal of 8078013 is 3108708.

8078013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4848804 + 3229209 = 2202^2 + 1797^2 .

It is not a de Polignac number, because 8078013 - 28 = 8077757 is a prime.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8078017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 448770 + ... + 448787.

It is an arithmetic number, because the mean of its divisors is an integer number (1944709).

Almost surely, 28078013 is an apocalyptic number.

It is an amenable number.

8078013 is a deficient number, since it is larger than the sum of its proper divisors (3590241).

8078013 is a wasteful number, since it uses less digits than its factorization.

8078013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897563 (or 897560 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 8078013 is about 2842.1845471398. The cubic root of 8078013 is about 200.6480065036.

The spelling of 8078013 in words is "eight million, seventy-eight thousand, thirteen".

Divisors: 1 3 9 897557 2692671 8078013