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1385488 = 24136661
BaseRepresentation
bin101010010010000010000
32121101112101
411102100100
5323313423
645410144
714530216
oct5222020
92541471
101385488
11866a35
12569954
13396820
14280cb6
151c57ad
hex152410

1385488 has 20 divisors (see below), whose sum is σ = 2891308. Its totient is φ = 639360.

The previous prime is 1385479. The next prime is 1385507. The reversal of 1385488 is 8845831.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 589824 = 892^2 + 768^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123 + ... + 3538.

21385488 is an apocalyptic number.

It is an amenable number.

1385488 is an abundant number, since it is smaller than the sum of its proper divisors (1505820).

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

1385488 is a wasteful number, since it uses less digits than its factorization.

1385488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6682 (or 6676 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 1385488 is about 1177.0675426669. The cubic root of 1385488 is about 111.4810172326.

The spelling of 1385488 in words is "one million, three hundred eighty-five thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 13 16 26 52 104 208 6661 13322 26644 53288 86593 106576 173186 346372 692744 1385488