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1418481 = 323972
BaseRepresentation
bin101011010010011110001
32200001210100
411122103301
5330342411
650223013
715025341
oct5322361
92601710
101418481
118897a9
12584a69
133a884c
1428cd21
151d0456
hex15a4f1

1418481 has 9 divisors (see below), whose sum is σ = 2054091. Its totient is φ = 943272.

The previous prime is 1418453. The next prime is 1418491. The reversal of 1418481 is 1848141.

Multipling 1418481 by its product of digits (1024), we get a square (1452524544 = 381122).

The square root of 1418481 is 1191.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 950625 + 467856 = 975^2 + 684^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1418481 - 25 = 1418449 is a prime.

It is a super-2 number, since 2×14184812 = 4024176694722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1418491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3375 + ... + 3771.

21418481 is an apocalyptic number.

1418481 is the 1191-st square number.

1418481 is the 596-th centered octagonal number.

It is an amenable number.

1418481 is a deficient number, since it is larger than the sum of its proper divisors (635610).

1418481 is an frugal number, since it uses more digits than its factorization.

1418481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 400 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The cubic root of 1418481 is about 112.3589937084.

The spelling of 1418481 in words is "one million, four hundred eighteen thousand, four hundred eighty-one".

Divisors: 1 3 9 397 1191 3573 157609 472827 1418481