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1200130240 = 2653750407
BaseRepresentation
bin100011110001000…
…1000100011000000
310002122020221012011
41013202020203000
54424213131430
6315030542304
741511636661
oct10742104300
93078227164
101200130240
11566495681
12295b07994
1316183b84a
14b5565368
157056422a
hex478888c0

1200130240 has 28 divisors (see below), whose sum is σ = 2857810896. Its totient is φ = 480051968.

The previous prime is 1200130223. The next prime is 1200130241. The reversal of 1200130240 is 420310021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200130240.

It is not an unprimeable number, because it can be changed into a prime (1200130241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1874884 + ... + 1875523.

Almost surely, 21200130240 is an apocalyptic number.

1200130240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200130240 is an abundant number, since it is smaller than the sum of its proper divisors (1657680656).

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

1200130240 is an equidigital number, since it uses as much as digits as its factorization.

1200130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750424 (or 3750414 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1200130240 is about 34642.8959528501. The cubic root of 1200130240 is about 1062.6970124174.

Adding to 1200130240 its reverse (420310021), we get a palindrome (1620440261).

The spelling of 1200130240 in words is "one billion, two hundred million, one hundred thirty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 3750407 7500814 15001628 18752035 30003256 37504070 60006512 75008140 120013024 150016280 240026048 300032560 600065120 1200130240