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1428193 = 13611801
BaseRepresentation
bin101011100101011100001
32200120010001
411130223201
5331200233
650340001
715065554
oct5345341
92616101
101428193
11896028
1258a601
133b00b0
1429269b
151d327d
hex15cae1

1428193 has 8 divisors (see below), whose sum is σ = 1564136. Its totient is φ = 1296000.

The previous prime is 1428179. The next prime is 1428197. The reversal of 1428193 is 3918241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 135424 + 1292769 = 368^2 + 1137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1428193 - 29 = 1427681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428197) 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 7 ways as a sum of consecutive naturals, for example, 108 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (195517).

21428193 is an apocalyptic number.

1428193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1428193 is a deficient number, since it is larger than the sum of its proper divisors (135943).

1428193 is a wasteful number, since it uses less digits than its factorization.

1428193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its digits is 1728, while the sum is 28.

The square root of 1428193 is about 1195.0702908197. The cubic root of 1428193 is about 112.6148423973.

The spelling of 1428193 in words is "one million, four hundred twenty-eight thousand, one hundred ninety-three".

Divisors: 1 13 61 793 1801 23413 109861 1428193