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1380284442 = 23325560823
BaseRepresentation
bin101001001000101…
…0111100000011010
310120012020201022000
41102101113200122
510311323100232
6344544141430
746130136615
oct12221274032
93505221260
101380284442
11649153149
12326307876
1318cc67974
14d145d17c
158129d27c
hex5245781a

1380284442 has 16 divisors (see below), whose sum is σ = 3067298880. Its totient is φ = 460094796.

The previous prime is 1380284413. The next prime is 1380284443. The reversal of 1380284442 is 2444820831.

1380284442 is a `hidden beast` number, since 138 + 0 + 2 + 84 + 442 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1380284397 and 1380284406.

It is not an unprimeable number, because it can be changed into a prime (1380284443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12780358 + ... + 12780465.

It is an arithmetic number, because the mean of its divisors is an integer number (191706180).

Almost surely, 21380284442 is an apocalyptic number.

1380284442 is an abundant number, since it is smaller than the sum of its proper divisors (1687014438).

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

1380284442 is a wasteful number, since it uses less digits than its factorization.

1380284442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560834 (or 25560828 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 1380284442 is about 37152.1795053803. The cubic root of 1380284442 is about 1113.4127689227.

The spelling of 1380284442 in words is "one billion, three hundred eighty million, two hundred eighty-four thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 18 27 54 25560823 51121646 76682469 153364938 230047407 460094814 690142221 1380284442