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253200660 = 223513730803
BaseRepresentation
bin11110001011110…
…00100100010100
3122122102221000020
433011320210110
51004304410120
641042545140
76163112226
oct1705704424
9578387006
10253200660
1111aa1a449
12709681b0
13405c349b
14258b0416
1517367640
hexf178914

253200660 has 48 divisors (see below), whose sum is σ = 714159936. Its totient is φ = 67025152.

The previous prime is 253200659. The next prime is 253200671. The reversal of 253200660 is 66002352.

It is a super-2 number, since 2×2532006602 = 128221148448871200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253200660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7182 + ... + 23621.

It is an arithmetic number, because the mean of its divisors is an integer number (14878332).

Almost surely, 2253200660 is an apocalyptic number.

253200660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253200660 is an abundant number, since it is smaller than the sum of its proper divisors (460959276).

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

253200660 is a wasteful number, since it uses less digits than its factorization.

253200660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30952 (or 30950 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 253200660 is about 15912.2801634461. The cubic root of 253200660 is about 632.6375189846.

The spelling of 253200660 in words is "two hundred fifty-three million, two hundred thousand, six hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 137 274 411 548 685 822 1370 1644 2055 2740 4110 8220 30803 61606 92409 123212 154015 184818 308030 369636 462045 616060 924090 1848180 4220011 8440022 12660033 16880044 21100055 25320066 42200110 50640132 63300165 84400220 126600330 253200660