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13354886740 = 2251351364949
BaseRepresentation
bin11000111000000001…
…10110011001010100
31021110201120112112211
430130000312121110
5204322322333430
610045105323204
7651642443566
oct143400663124
937421515484
1013354886740
115733538088
122708636504
13134aa79260
14909949336
155326a372a
hex31c036654

13354886740 has 24 divisors (see below), whose sum is σ = 30202590600. Its totient is φ = 4931035008.

The previous prime is 13354886737. The next prime is 13354886747. The reversal of 13354886740 is 4768845331.

It can be written as a sum of positive squares in 4 ways, for example, as 65869456 + 13289017284 = 8116^2 + 115278^2 .

It is a super-5 number, since 5×133548867405 (a number of 52 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13354886747) 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, 25682215 + ... + 25682734.

It is an arithmetic number, because the mean of its divisors is an integer number (1258441275).

Almost surely, 213354886740 is an apocalyptic number.

13354886740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13354886740 is an abundant number, since it is smaller than the sum of its proper divisors (16847703860).

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

13354886740 is a wasteful number, since it uses less digits than its factorization.

13354886740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51364971 (or 51364969 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 13354886740 in words is "thirteen billion, three hundred fifty-four million, eight hundred eighty-six thousand, seven hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 51364949 102729898 205459796 256824745 513649490 667744337 1027298980 1335488674 2670977348 3338721685 6677443370 13354886740