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20024013023 = 7217137175463
BaseRepresentation
bin10010101001100001…
…100011000011011111
31220200111201020220222
4102221201203003133
5312002121404043
613110544031555
71306133205500
oct225141430337
956614636828
1020024013023
1185460403a3
123a6a0025bb
131b71664821
14d7d576ba7
157c2e10d68
hex4a98630df

20024013023 has 24 divisors (see below), whose sum is σ = 24843596832. Its totient is φ = 16035823104.

The previous prime is 20024013007. The next prime is 20024013041. The reversal of 20024013023 is 32031042002.

It is not a de Polignac number, because 20024013023 - 24 = 20024013007 is a prime.

It is a super-2 number, since 2×200240130232 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20024012992 and 20024013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20024013323) 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 23 ways as a sum of consecutive naturals, for example, 26390 + ... + 201852.

It is an arithmetic number, because the mean of its divisors is an integer number (1035149868).

Almost surely, 220024013023 is an apocalyptic number.

20024013023 is a deficient number, since it is larger than the sum of its proper divisors (4819583809).

20024013023 is a wasteful number, since it uses less digits than its factorization.

20024013023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175631 (or 175624 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20024013023 its reverse (32031042002), we get a palindrome (52055055025).

The spelling of 20024013023 in words is "twenty billion, twenty-four million, thirteen thousand, twenty-three".

Divisors: 1 7 17 49 119 137 833 959 2329 6713 16303 114121 175463 1228241 2982871 8597687 20880097 24038431 146160679 168269017 408653327 1177883119 2860573289 20024013023