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20230912 = 28136079
BaseRepresentation
bin100110100101…
…1001100000000
31102001211121001
41031023030000
520134342122
62001341344
7333650152
oct115131400
942054531
1020230912
1110468869
126937854
134264570
142988ad2
151b99527
hex134b300

20230912 has 36 divisors (see below), whose sum is σ = 43496320. Its totient is φ = 9335808.

The previous prime is 20230883. The next prime is 20230919. The reversal of 20230912 is 21903202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20230912.

It is not an unprimeable number, because it can be changed into a prime (20230919) 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, 289 + ... + 6367.

Almost surely, 220230912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20230912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21748160).

20230912 is an abundant number, since it is smaller than the sum of its proper divisors (23265408).

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

20230912 is an equidigital number, since it uses as much as digits as its factorization.

20230912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108 (or 6094 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20230912 is about 4497.8786110788. The cubic root of 20230912 is about 272.4824195375.

The spelling of 20230912 in words is "twenty million, two hundred thirty thousand, nine hundred twelve".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 128 208 256 416 832 1664 3328 6079 12158 24316 48632 79027 97264 158054 194528 316108 389056 632216 778112 1264432 1556224 2528864 5057728 10115456 20230912