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23052520 = 235576313
BaseRepresentation
bin101011111110…
…0000011101000
31121101012010001
41113330003220
521400140040
62142032344
7366641341
oct127740350
947335101
1023052520
1112015777
1278786b4
134a1195a
1430c10c8
15205559a
hex15fc0e8

23052520 has 16 divisors (see below), whose sum is σ = 51868260. Its totient is φ = 9220992.

The previous prime is 23052461. The next prime is 23052541. The reversal of 23052520 is 2525032.

It can be written as a sum of positive squares in 2 ways, for example, as 21325924 + 1726596 = 4618^2 + 1314^2 .

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 3 ways as a sum of consecutive naturals, for example, 288117 + ... + 288196.

Almost surely, 223052520 is an apocalyptic number.

23052520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23052520 is an abundant number, since it is smaller than the sum of its proper divisors (28815740).

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

23052520 is a wasteful number, since it uses less digits than its factorization.

23052520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576324 (or 576320 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 23052520 is about 4801.3039895428. The cubic root of 23052520 is about 284.6029970447.

Adding to 23052520 its reverse (2525032), we get a palindrome (25577552).

The spelling of 23052520 in words is "twenty-three million, fifty-two thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 576313 1152626 2305252 2881565 4610504 5763130 11526260 23052520