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252031524 = 223103203909
BaseRepresentation
bin11110000010110…
…11001000100100
3122120020112020220
433001123020210
51004010002044
641001524340
76150142533
oct1701331044
9576215226
10252031524
1111a2a1018
12704a36b0
13402a42a4
142568831a
15171d6019
hexf05b224

252031524 has 24 divisors (see below), whose sum is σ = 593785920. Its totient is φ = 83194464.

The previous prime is 252031513. The next prime is 252031541. The reversal of 252031524 is 425130252.

It is a junction number, because it is equal to n+sod(n) for n = 252031494 and 252031503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100719 + ... + 103190.

It is an arithmetic number, because the mean of its divisors is an integer number (24741080).

Almost surely, 2252031524 is an apocalyptic number.

It is an amenable number.

252031524 is an abundant number, since it is smaller than the sum of its proper divisors (341754396).

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

252031524 is a wasteful number, since it uses less digits than its factorization.

252031524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204019 (or 204017 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 252031524 is about 15875.5007480079. The cubic root of 252031524 is about 631.6622968844.

Adding to 252031524 its reverse (425130252), we get a palindrome (677161776).

The spelling of 252031524 in words is "two hundred fifty-two million, thirty-one thousand, five hundred twenty-four".

Divisors: 1 2 3 4 6 12 103 206 309 412 618 1236 203909 407818 611727 815636 1223454 2446908 21002627 42005254 63007881 84010508 126015762 252031524