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9689988 = 22371110487
BaseRepresentation
bin100100111101…
…101110000100
3200020022011110
4210331232010
54440034423
6543405020
7145235460
oct44755604
920208143
109689988
115519260
1232b3770
132013729
1414034a0
15cb6193
hex93db84

9689988 has 48 divisors (see below), whose sum is σ = 28191744. Its totient is φ = 2516640.

The previous prime is 9689987. The next prime is 9689989. The reversal of 9689988 is 8899869.

9689988 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9689987) and next prime (9689989).

It is not an unprimeable number, because it can be changed into a prime (9689987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4320 + ... + 6167.

It is an arithmetic number, because the mean of its divisors is an integer number (587328).

Almost surely, 29689988 is an apocalyptic number.

It is an amenable number.

9689988 is an abundant number, since it is smaller than the sum of its proper divisors (18501756).

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

9689988 is a wasteful number, since it uses less digits than its factorization.

9689988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10512 (or 10510 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 57.

The square root of 9689988 is about 3112.8745557764. The cubic root of 9689988 is about 213.1937226743.

The spelling of 9689988 in words is "nine million, six hundred eighty-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 66 77 84 132 154 231 308 462 924 10487 20974 31461 41948 62922 73409 115357 125844 146818 220227 230714 293636 346071 440454 461428 692142 807499 880908 1384284 1614998 2422497 3229996 4844994 9689988