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20152505324 = 2273172270449
BaseRepresentation
bin10010110001001011…
…101101001111101100
31221000110111100020002
4102301023231033230
5312233020132244
613131414043432
71312253316560
oct226113551754
957013440202
1020152505324
118601622586
123aa5049578
131b92172c83
14d926636a0
157ce342a4e
hex4b12ed3ec

20152505324 has 24 divisors (see below), whose sum is σ = 40432173600. Its totient is φ = 8609538816.

The previous prime is 20152505299. The next prime is 20152505353. The reversal of 20152505324 is 42350525102.

It is a super-2 number, since 2×201525053242 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126349 + ... + 1144100.

It is an arithmetic number, because the mean of its divisors is an integer number (1684673900).

Almost surely, 220152505324 is an apocalyptic number.

It is an amenable number.

20152505324 is an abundant number, since it is smaller than the sum of its proper divisors (20279668276).

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

20152505324 is a wasteful number, since it uses less digits than its factorization.

20152505324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270777 (or 2270775 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 20152505324 in words is "twenty billion, one hundred fifty-two million, five hundred five thousand, three hundred twenty-four".

Divisors: 1 2 4 7 14 28 317 634 1268 2219 4438 8876 2270449 4540898 9081796 15893143 31786286 63572572 719732333 1439464666 2878929332 5038126331 10076252662 20152505324