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1608091 = 23139503
BaseRepresentation
bin110001000100110011011
310000200212221
412020212123
5402424331
654244511
716445212
oct6104633
93020787
101608091
119a9201
12656737
13443c44
142dc079
1521b711
hex18899b

1608091 has 8 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 1524072.

The previous prime is 1608083. The next prime is 1608107. The reversal of 1608091 is 1908061.

1608091 = 1642 + 1652 + ... + 2092.

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

It is not a de Polignac number, because 1608091 - 23 = 1608083 is a prime.

1608091 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1608041) 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, 2946 + ... + 3448.

It is an arithmetic number, because the mean of its divisors is an integer number (211680).

21608091 is an apocalyptic number.

1608091 is a deficient number, since it is larger than the sum of its proper divisors (85349).

1608091 is a wasteful number, since it uses less digits than its factorization.

1608091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1608091 is about 1268.1052795411. The cubic root of 1608091 is about 117.1575300308.

The spelling of 1608091 in words is "one million, six hundred eight thousand, ninety-one".

Divisors: 1 23 139 503 3197 11569 69917 1608091