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13020023 = 61461463
BaseRepresentation
bin110001101010…
…101101110111
3220111111010002
4301222231313
511313120043
61143021515
7215445152
oct61525567
926444102
1013020023
117393155
12443a89b
13290b373
141a2cc99
151222bb8
hexc6ab77

13020023 has 8 divisors (see below), whose sum is σ = 13290816. Its totient is φ = 12751200.

The previous prime is 13020017. The next prime is 13020037. The reversal of 13020023 is 32002031.

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 13020023 - 220 = 11971447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13019986 and 13020013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020053) 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, 27890 + ... + 28352.

It is an arithmetic number, because the mean of its divisors is an integer number (1661352).

Almost surely, 213020023 is an apocalyptic number.

13020023 is a deficient number, since it is larger than the sum of its proper divisors (270793).

13020023 is an equidigital number, since it uses as much as digits as its factorization.

13020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 13020023 is about 3608.3268976078. The cubic root of 13020023 is about 235.2541267807.

Adding to 13020023 its reverse (32002031), we get a palindrome (45022054).

The spelling of 13020023 in words is "thirteen million, twenty thousand, twenty-three".

Divisors: 1 61 461 463 28121 28243 213443 13020023