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8064520 = 235375449
BaseRepresentation
bin11110110000111000001000
3120011201102221
4132300320020
54031031040
6444503424
7125355502
oct36607010
916151387
108064520
114608aa2
12284ab74
131894909
1410dcd72
15a9474a
hex7b0e08

8064520 has 32 divisors (see below), whose sum is σ = 18639000. Its totient is φ = 3138048.

The previous prime is 8064517. The next prime is 8064527. The reversal of 8064520 is 254608.

It can be written as a sum of positive squares in 4 ways, for example, as 6441444 + 1623076 = 2538^2 + 1274^2 .

It is not an unprimeable number, because it can be changed into a prime (8064527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245 + ... + 4204.

Almost surely, 28064520 is an apocalyptic number.

It is an amenable number.

8064520 is an abundant number, since it is smaller than the sum of its proper divisors (10574480).

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

8064520 is a wasteful number, since it uses less digits than its factorization.

8064520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497 (or 5493 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 8064520 is about 2839.8098527894. The cubic root of 8064520 is about 200.5362276811.

It can be divided in two parts, 80645 and 20, that multiplied together give a square (1612900 = 12702).

The spelling of 8064520 in words is "eight million, sixty-four thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 20 37 40 74 148 185 296 370 740 1480 5449 10898 21796 27245 43592 54490 108980 201613 217960 403226 806452 1008065 1612904 2016130 4032260 8064520