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355142500 = 2254142057
BaseRepresentation
bin10101001010110…
…000101101100100
3220202021002220221
4111022300231210
51211404030000
655123534124
711541442606
oct2512605544
9822232827
10355142500
111725178a9
129ab2a344
1358766abb
1435249176
15212a261a
hex152b0b64

355142500 has 30 divisors (see below), whose sum is σ = 776631086. Its totient is φ = 142056000.

The previous prime is 355142483. The next prime is 355142503. The reversal of 355142500 is 5241553.

It can be written as a sum of positive squares in 5 ways, for example, as 270207844 + 84934656 = 16438^2 + 9216^2 .

It is a super-2 number, since 2×3551425002 = 252252390612500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (355142503) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 68529 + ... + 73528.

Almost surely, 2355142500 is an apocalyptic number.

It is an amenable number.

355142500 is an abundant number, since it is smaller than the sum of its proper divisors (421488586).

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

355142500 is a wasteful number, since it uses less digits than its factorization.

355142500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142081 (or 142064 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 355142500 is about 18845.2248593642. The cubic root of 355142500 is about 708.1646041785.

The spelling of 355142500 in words is "three hundred fifty-five million, one hundred forty-two thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1250 2500 142057 284114 568228 710285 1420570 2841140 3551425 7102850 14205700 17757125 35514250 71028500 88785625 177571250 355142500