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20369023 = 137157947
BaseRepresentation
bin100110110110…
…0111001111111
31102022212001021
41031230321333
520203302043
62004325011
7335063623
oct115547177
942285037
1020369023
1110552604
1269a3767
1342b239c
1429c3183
151bc53ed
hex136ce7f

20369023 has 8 divisors (see below), whose sum is σ = 20670192. Its totient is φ = 20070336.

The previous prime is 20369017. The next prime is 20369033. The reversal of 20369023 is 32096302.

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 20369023 - 217 = 20237951 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 (20369033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21036 + ... + 21982.

It is an arithmetic number, because the mean of its divisors is an integer number (2583774).

Almost surely, 220369023 is an apocalyptic number.

20369023 is a deficient number, since it is larger than the sum of its proper divisors (301169).

20369023 is a wasteful number, since it uses less digits than its factorization.

20369023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20369023 is about 4513.2054019289. The cubic root of 20369023 is about 273.1010686354.

The spelling of 20369023 in words is "twenty million, three hundred sixty-nine thousand, twenty-three".

Divisors: 1 137 157 947 21509 129739 148679 20369023