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1378076 = 22727989
BaseRepresentation
bin101010000011100011100
32121000100212
411100130130
5323044301
645311552
714466500
oct5203434
92530325
101378076
11861407
125655b8
1339333b
1427c300
151c34bb
hex15071c

1378076 has 36 divisors (see below), whose sum is σ = 2872800. Its totient is φ = 576576.

The previous prime is 1378073. The next prime is 1378081. The reversal of 1378076 is 6708731.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15440 + ... + 15528.

It is an arithmetic number, because the mean of its divisors is an integer number (79800).

21378076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436400).

1378076 is an abundant number, since it is smaller than the sum of its proper divisors (1494724).

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

1378076 is a wasteful number, since it uses less digits than its factorization.

1378076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 1378076 is about 1173.9148180341. The cubic root of 1378076 is about 111.2818635322.

The spelling of 1378076 in words is "one million, three hundred seventy-eight thousand, seventy-six".

Divisors: 1 2 4 7 14 28 49 79 89 98 158 178 196 316 356 553 623 1106 1246 2212 2492 3871 4361 7031 7742 8722 14062 15484 17444 28124 49217 98434 196868 344519 689038 1378076