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1380468 = 2231767101
BaseRepresentation
bin101010001000001110100
32121010122110
411101001310
5323133333
645331020
714506455
oct5210164
92533573
101380468
11863191
12566a70
1339445b
1427d12c
151c4063
hex151074

1380468 has 48 divisors (see below), whose sum is σ = 3495744. Its totient is φ = 422400.

The previous prime is 1380443. The next prime is 1380469. The reversal of 1380468 is 8640831.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13618 + ... + 13718.

It is an arithmetic number, because the mean of its divisors is an integer number (72828).

21380468 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 1380468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747872).

1380468 is an abundant number, since it is smaller than the sum of its proper divisors (2115276).

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

1380468 is a wasteful number, since it uses less digits than its factorization.

1380468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1380468 is about 1174.9331895899. The cubic root of 1380468 is about 111.3462122702.

The spelling of 1380468 in words is "one million, three hundred eighty thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 67 68 101 102 134 201 202 204 268 303 402 404 606 804 1139 1212 1717 2278 3417 3434 4556 5151 6767 6834 6868 10302 13534 13668 20301 20604 27068 40602 81204 115039 230078 345117 460156 690234 1380468