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1380974120 = 23561565973
BaseRepresentation
bin101001001001111…
…1111111000101000
310120020112202100122
41102103333320220
510312012132440
6345011022412
746136041421
oct12223777050
93506482318
101380974120
11649584329
1232659aa08
13190149866
14d159c648
15813877b5
hex524ffe28

1380974120 has 32 divisors (see below), whose sum is σ = 3158134920. Its totient is φ = 543333120.

The previous prime is 1380974099. The next prime is 1380974123. The reversal of 1380974120 is 214790831.

It can be written as a sum of positive squares in 4 ways, for example, as 1027458916 + 353515204 = 32054^2 + 18802^2 .

It is not an unprimeable number, because it can be changed into a prime (1380974123) 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, 280547 + ... + 285426.

Almost surely, 21380974120 is an apocalyptic number.

1380974120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1380974120 is an abundant number, since it is smaller than the sum of its proper divisors (1777160800).

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

1380974120 is a wasteful number, since it uses less digits than its factorization.

1380974120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566045 (or 566041 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1380974120 is about 37161.4601435412. The cubic root of 1380974120 is about 1113.5981820176.

The spelling of 1380974120 in words is "one billion, three hundred eighty million, nine hundred seventy-four thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 61 122 244 305 488 610 1220 2440 565973 1131946 2263892 2829865 4527784 5659730 11319460 22638920 34524353 69048706 138097412 172621765 276194824 345243530 690487060 1380974120