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3143003240 = 235136044237
BaseRepresentation
bin1011101101010110…
…0110110001101000
322010001010002220102
42323111212301220
522414102100430
61235513244532
7140613041516
oct27325466150
98101102812
103143003240
111373163943
12738703748
133b1203840
1421b5cd4b6
15135de0345
hexbb566c68

3143003240 has 32 divisors (see below), whose sum is σ = 7615739880. Its totient is φ = 1160493312.

The previous prime is 3143003233. The next prime is 3143003243. The reversal of 3143003240 is 423003413.

It can be written as a sum of positive squares in 4 ways, for example, as 1562304676 + 1580698564 = 39526^2 + 39758^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (3143003243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3021599 + ... + 3022638.

Almost surely, 23143003240 is an apocalyptic number.

It is an amenable number.

3143003240 is an abundant number, since it is smaller than the sum of its proper divisors (4472736640).

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

3143003240 is a wasteful number, since it uses less digits than its factorization.

3143003240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044261 (or 6044257 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 3143003240 is about 56062.4940579707. The cubic root of 3143003240 is about 1464.8110571054.

Adding to 3143003240 its reverse (423003413), we get a palindrome (3566006653).

The spelling of 3143003240 in words is "three billion, one hundred forty-three million, three thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 6044237 12088474 24176948 30221185 48353896 60442370 78575081 120884740 157150162 241769480 314300324 392875405 628600648 785750810 1571501620 3143003240