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1912072480 = 25511950453
BaseRepresentation
bin111000111110111…
…1110100100100000
311221020220100100021
41301331332210200
512403442304410
6513422203224
765245230223
oct16175764440
94836810307
101912072480
118a135139a
12454423514
1324619c846
14141d2b5ba
15b2ce4eda
hex71f7e920

1912072480 has 24 divisors (see below), whose sum is σ = 4517271612. Its totient is φ = 764828928.

The previous prime is 1912072469. The next prime is 1912072483. The reversal of 1912072480 is 842702191.

It can be written as a sum of positive squares in 2 ways, for example, as 1798777744 + 113294736 = 42412^2 + 10644^2 .

It is not an unprimeable number, because it can be changed into a prime (1912072483) 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 3 ways as a sum of consecutive naturals, for example, 5975067 + ... + 5975386.

Almost surely, 21912072480 is an apocalyptic number.

1912072480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1912072480 is an abundant number, since it is smaller than the sum of its proper divisors (2605199132).

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

1912072480 is a wasteful number, since it uses less digits than its factorization.

1912072480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11950468 (or 11950460 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1912072480 is about 43727.2509998056. The cubic root of 1912072480 is about 1241.1800421130.

The spelling of 1912072480 in words is "one billion, nine hundred twelve million, seventy-two thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 11950453 23900906 47801812 59752265 95603624 119504530 191207248 239009060 382414496 478018120 956036240 1912072480