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13689059988 = 2231140754999
BaseRepresentation
bin11001011111110111…
…00111101010010100
31022100000101022001210
430233323213222110
5211013344404423
610142204021420
7663141042612
oct145773475224
938300338053
1013689059988
11589513241a
1227a0531870
1313a20806c6
1493c0966b2
15551bb2b93
hex32fee7a94

13689059988 has 12 divisors (see below), whose sum is σ = 31941140000. Its totient is φ = 4563019992.

The previous prime is 13689059987. The next prime is 13689059999. The reversal of 13689059988 is 88995098631.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13689059987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570377488 + ... + 570377511.

Almost surely, 213689059988 is an apocalyptic number.

It is an amenable number.

13689059988 is an abundant number, since it is smaller than the sum of its proper divisors (18252080012).

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

13689059988 is a wasteful number, since it uses less digits than its factorization.

13689059988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140755006 (or 1140755004 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 66.

It can be divided in two parts, 136890 and 59988, that added together give a triangular number (196878 = T627).

The spelling of 13689059988 in words is "thirteen billion, six hundred eighty-nine million, fifty-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 1140754999 2281509998 3422264997 4563019996 6844529994 13689059988