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23906025 = 32521113743
BaseRepresentation
bin101101100110…
…0011011101001
31122222112220100
41123030123221
522104443100
62212220013
7410124603
oct133143351
948875810
1023906025
1112548a50
12800a609
134c502a0
143264173
152173400
hex16cc6e9

23906025 has 72 divisors (see below), whose sum is σ = 50371776. Its totient is φ = 10684800.

The previous prime is 23906017. The next prime is 23906027. The reversal of 23906025 is 52060932.

It is not a de Polignac number, because 23906025 - 23 = 23906017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23906025.

It is not an unprimeable number, because it can be changed into a prime (23906027) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 31804 + ... + 32546.

It is an arithmetic number, because the mean of its divisors is an integer number (699608).

Almost surely, 223906025 is an apocalyptic number.

23906025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23906025 is an abundant number, since it is smaller than the sum of its proper divisors (26465751).

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

23906025 is a wasteful number, since it uses less digits than its factorization.

23906025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 23906025 is about 4889.3787948982. The cubic root of 23906025 is about 288.0729343639.

Adding to 23906025 its reverse (52060932), we get a palindrome (75966957).

The spelling of 23906025 in words is "twenty-three million, nine hundred six thousand, twenty-five".

Divisors: 1 3 5 9 11 13 15 25 33 39 45 55 65 75 99 117 143 165 195 225 275 325 429 495 585 715 743 825 975 1287 2145 2229 2475 2925 3575 3715 6435 6687 8173 9659 10725 11145 18575 24519 28977 32175 33435 40865 48295 55725 73557 86931 106249 122595 144885 167175 204325 241475 318747 367785 434655 531245 612975 724425 956241 1593735 1838925 2173275 2656225 4781205 7968675 23906025