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20088912 = 243439733
BaseRepresentation
bin100110010100…
…0100001010000
31101210121210210
41030220201100
520120321122
61554324120
7332516154
oct114504120
941717723
1020088912
1110381108
126889640
134214a3c
14294d064
151b6c40c
hex1328850

20088912 has 40 divisors (see below), whose sum is σ = 53108704. Its totient is φ = 6539904.

The previous prime is 20088911. The next prime is 20088923. The reversal of 20088912 is 21988002.

It is a self number, because there is not a number n which added to its sum of digits gives 20088912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20088911) 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, 2803 + ... + 6930.

Almost surely, 220088912 is an apocalyptic number.

It is an amenable number.

20088912 is an abundant number, since it is smaller than the sum of its proper divisors (33019792).

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

20088912 is a wasteful number, since it uses less digits than its factorization.

20088912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9787 (or 9781 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 20088912 is about 4482.0655952362. The cubic root of 20088912 is about 271.8434075591.

The spelling of 20088912 in words is "twenty million, eighty-eight thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 43 48 86 129 172 258 344 516 688 1032 2064 9733 19466 29199 38932 58398 77864 116796 155728 233592 418519 467184 837038 1255557 1674076 2511114 3348152 5022228 6696304 10044456 20088912