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20074093 = 131790833
BaseRepresentation
bin100110010010…
…0111001101101
31101202212110221
41030210321231
520114332333
61554131341
7332425024
oct114447155
941685427
1020074093
1110370a66
126880b51
13420b080
1429478bb
151b67d2d
hex1324e6d

20074093 has 8 divisors (see below), whose sum is σ = 22890168. Its totient is φ = 17439744.

The previous prime is 20074057. The next prime is 20074139. The reversal of 20074093 is 39047002.

It can be written as a sum of positive squares in 4 ways, for example, as 3452164 + 16621929 = 1858^2 + 4077^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20074093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20074793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45196 + ... + 45637.

It is an arithmetic number, because the mean of its divisors is an integer number (2861271).

Almost surely, 220074093 is an apocalyptic number.

It is an amenable number.

20074093 is a deficient number, since it is larger than the sum of its proper divisors (2816075).

20074093 is a wasteful number, since it uses less digits than its factorization.

20074093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90863.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20074093 is about 4480.4121462205. The cubic root of 20074093 is about 271.7765474852.

The spelling of 20074093 in words is "twenty million, seventy-four thousand, ninety-three".

Divisors: 1 13 17 221 90833 1180829 1544161 20074093