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8445081 = 322712401
BaseRepresentation
bin100000001101…
…110010011001
3120220001110210
4200031302121
54130220311
6501001333
7131532141
oct40156231
916801423
108445081
114848a07
1229b3249
131998bb8
14119b921
15b1c3a6
hex80dc99

8445081 has 8 divisors (see below), whose sum is σ = 11310624. Its totient is φ = 5604800.

The previous prime is 8445079. The next prime is 8445089. The reversal of 8445081 is 1805448.

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

It is a cyclic number.

It is not a de Polignac number, because 8445081 - 21 = 8445079 is a prime.

It is a super-2 number, since 2×84450812 = 142638786193122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8445089) 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, 5520 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (1413828).

Almost surely, 28445081 is an apocalyptic number.

It is an amenable number.

8445081 is a deficient number, since it is larger than the sum of its proper divisors (2865543).

8445081 is a wasteful number, since it uses less digits than its factorization.

8445081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12631.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 8445081 is about 2906.0421538581. The cubic root of 8445081 is about 203.6422748446.

The spelling of 8445081 in words is "eight million, four hundred forty-five thousand, eighty-one".

Divisors: 1 3 227 681 12401 37203 2815027 8445081