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13697006840 = 2351131129561
BaseRepresentation
bin11001100000110011…
…11011110011111000
31022100120100001002122
430300121323303320
5211022413204330
610143050220412
7663265431356
oct146031736370
938316301078
1013697006840
11589966aa70
1227a3124708
1313a390389a
1493d1647d6
155527325e5
hex33067bcf8

13697006840 has 32 divisors (see below), whose sum is σ = 33619926960. Its totient is φ = 4980729600.

The previous prime is 13697006783. The next prime is 13697006927. The reversal of 13697006840 is 4860079631.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 13697006791 and 13697006800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15564341 + ... + 15565220.

Almost surely, 213697006840 is an apocalyptic number.

13697006840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13697006840 is an abundant number, since it is smaller than the sum of its proper divisors (19922920120).

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

13697006840 is a wasteful number, since it uses less digits than its factorization.

13697006840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31129583 (or 31129579 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 13697006840 in words is "thirteen billion, six hundred ninety-seven million, six thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 31129561 62259122 124518244 155647805 249036488 311295610 342425171 622591220 684850342 1245182440 1369700684 1712125855 2739401368 3424251710 6848503420 13697006840