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1380480420 = 2235112091637
BaseRepresentation
bin101001001001000…
…0111010110100100
310120012121200010110
41102102013112210
510311400333140
6344552253020
746131614154
oct12222072644
93505550113
101380480420
11649277410
123263a1170
13190005c27
14d14b0764
15812db380
hex524875a4

1380480420 has 48 divisors (see below), whose sum is σ = 4216742208. Its totient is φ = 334661760.

The previous prime is 1380480419. The next prime is 1380480457. The reversal of 1380480420 is 240840831.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1045159 + ... + 1046478.

It is an arithmetic number, because the mean of its divisors is an integer number (87848796).

Almost surely, 21380480420 is an apocalyptic number.

1380480420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1380480420 is an abundant number, since it is smaller than the sum of its proper divisors (2836261788).

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

1380480420 is a wasteful number, since it uses less digits than its factorization.

1380480420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091660 (or 2091658 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1380480420 is about 37154.8169151727. The cubic root of 1380480420 is about 1113.4654619461.

The spelling of 1380480420 in words is "one billion, three hundred eighty million, four hundred eighty thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 660 2091637 4183274 6274911 8366548 10458185 12549822 20916370 23008007 25099644 31374555 41832740 46016014 62749110 69024021 92032028 115040035 125498220 138048042 230080070 276096084 345120105 460160140 690240210 1380480420