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23438860 = 2254192797
BaseRepresentation
bin101100101101…
…0011000001100
31122002211001221
41121122120030
522000020420
62154213124
7403140604
oct131323014
948084057
1023438860
1112259a65
127a241a4
134b18763
143181c04
1520cecaa
hex165a60c

23438860 has 24 divisors (see below), whose sum is σ = 49356720. Its totient is φ = 9349824.

The previous prime is 23438843. The next prime is 23438887. The reversal of 23438860 is 6883432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6982 + ... + 9778.

It is an arithmetic number, because the mean of its divisors is an integer number (2056530).

Almost surely, 223438860 is an apocalyptic number.

23438860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23438860 is an abundant number, since it is smaller than the sum of its proper divisors (25917860).

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

23438860 is a wasteful number, since it uses less digits than its factorization.

23438860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3223 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 23438860 is about 4841.3696409177. The cubic root of 23438860 is about 286.1840958606.

The spelling of 23438860 in words is "twenty-three million, four hundred thirty-eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 419 838 1676 2095 2797 4190 5594 8380 11188 13985 27970 55940 1171943 2343886 4687772 5859715 11719430 23438860