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23925940 = 2251979797
BaseRepresentation
bin101101101000…
…1010010110100
31200000120012221
41123101102310
522111112230
62212452124
7410236633
oct133212264
950016187
1023925940
1112561a05
12801a044
134c5937c
14326b51a
15217927a
hex16d14b4

23925940 has 48 divisors (see below), whose sum is σ = 53625600. Its totient is φ = 8940672.

The previous prime is 23925917. The next prime is 23925943. The reversal of 23925940 is 4952932.

It is a junction number, because it is equal to n+sod(n) for n = 23925896 and 23925905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23925943) 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, 29622 + ... + 30418.

It is an arithmetic number, because the mean of its divisors is an integer number (1117200).

Almost surely, 223925940 is an apocalyptic number.

23925940 is a gapful number since it is divisible by the number (20) 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 23925940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26812800).

23925940 is an abundant number, since it is smaller than the sum of its proper divisors (29699660).

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

23925940 is a wasteful number, since it uses less digits than its factorization.

23925940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 23925940 is about 4891.4149282186. The cubic root of 23925940 is about 288.1529055588.

The spelling of 23925940 in words is "twenty-three million, nine hundred twenty-five thousand, nine hundred forty".

Divisors: 1 2 4 5 10 19 20 38 76 79 95 158 190 316 380 395 790 797 1501 1580 1594 3002 3188 3985 6004 7505 7970 15010 15143 15940 30020 30286 60572 62963 75715 125926 151430 251852 302860 314815 629630 1196297 1259260 2392594 4785188 5981485 11962970 23925940