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23907828 = 2237436619
BaseRepresentation
bin101101100110…
…0110111110100
31122222122101010
41123030313310
522110022303
62212232220
7410133060
oct133146764
948878333
1023907828
111254a33a
12800b670
134c51059
143264aa0
152173c03
hex16ccdf4

23907828 has 48 divisors (see below), whose sum is σ = 65246720. Its totient is φ = 6670944.

The previous prime is 23907827. The next prime is 23907841. The reversal of 23907828 is 82870932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23907827) 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, 303 + ... + 6921.

Almost surely, 223907828 is an apocalyptic number.

23907828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23907828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32623360).

23907828 is an abundant number, since it is smaller than the sum of its proper divisors (41338892).

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

23907828 is a wasteful number, since it uses less digits than its factorization.

23907828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676 (or 6674 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 23907828 is about 4889.5631706728. The cubic root of 23907828 is about 288.0801763659.

The spelling of 23907828 in words is "twenty-three million, nine hundred seven thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 43 84 86 129 172 258 301 516 602 903 1204 1806 3612 6619 13238 19857 26476 39714 46333 79428 92666 138999 185332 277998 284617 555996 569234 853851 1138468 1707702 1992319 3415404 3984638 5976957 7969276 11953914 23907828