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13047541980 = 223511109293619
BaseRepresentation
bin11000010011011000…
…11011000011011100
31020200022020210210120
430021230123003130
5203210132320410
65554410034540
7641221163664
oct141154330334
936608223716
1013047541980
115595aa7450
122641718a50
1312cc1a9355
148babc31a4
155156e3570
hex309b1b0dc

13047541980 has 192 divisors, whose sum is σ = 40422412800. Its totient is φ = 3118279680.

The previous prime is 13047541979. The next prime is 13047541999. The reversal of 13047541980 is 8914574031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21078111 + ... + 21078729.

It is an arithmetic number, because the mean of its divisors is an integer number (210533400).

Almost surely, 213047541980 is an apocalyptic number.

13047541980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13047541980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20211206400).

13047541980 is an abundant number, since it is smaller than the sum of its proper divisors (27374870820).

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

13047541980 is a wasteful number, since it uses less digits than its factorization.

13047541980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 13047541980 in words is "thirteen billion, forty-seven million, five hundred forty-one thousand, nine hundred eighty".