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8006538 = 231334423
BaseRepresentation
bin11110100010101110001010
3120001202220110
4132202232022
54022202123
6443335150
7125024451
oct36425612
916052813
108006538
114579481
1228214b6
1318743c7
1410c5b98
15a82493
hex7a2b8a

8006538 has 8 divisors (see below), whose sum is σ = 16013088. Its totient is φ = 2668844.

The previous prime is 8006513. The next prime is 8006549. The reversal of 8006538 is 8356008.

It is a sphenic number, since it is the product of 3 distinct primes.

8006538 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667206 + ... + 667217.

It is an arithmetic number, because the mean of its divisors is an integer number (2001636).

Almost surely, 28006538 is an apocalyptic number.

8006538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8006538 is a wasteful number, since it uses less digits than its factorization.

8006538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334428.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8006538 is about 2829.5826547390. The cubic root of 8006538 is about 200.0544684979.

The spelling of 8006538 in words is "eight million, six thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 1334423 2668846 4003269 8006538