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13002023020 = 225792871593
BaseRepresentation
bin11000001101111101…
…10010000001101100
31020120010121012112011
430012332302001230
5203112004214040
65550102251004
7640126241440
oct140676620154
936503535464
1013002023020
115572337378
12262a426a64
1312c292c75c
148b4b34820
155117013ea
hex306fb206c

13002023020 has 24 divisors (see below), whose sum is σ = 31204855584. Its totient is φ = 4457836416.

The previous prime is 13002023003. The next prime is 13002023051. The reversal of 13002023020 is 2032020031.

It is a happy number.

It is a super-2 number, since 2×130020230202 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46435657 + ... + 46435936.

It is an arithmetic number, because the mean of its divisors is an integer number (1300202316).

Almost surely, 213002023020 is an apocalyptic number.

13002023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13002023020 is an abundant number, since it is smaller than the sum of its proper divisors (18202832564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13002023020 is a wasteful number, since it uses less digits than its factorization.

13002023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92871609 (or 92871607 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 13002023020 its reverse (2032020031), we get a palindrome (15034043051).

The spelling of 13002023020 in words is "thirteen billion, two million, twenty-three thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 92871593 185743186 371486372 464357965 650101151 928715930 1300202302 1857431860 2600404604 3250505755 6501011510 13002023020