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1430023 = 71761197
BaseRepresentation
bin101011101001000000111
32200122121211
411131020013
5331230043
650352251
715104110
oct5351007
92618554
101430023
11897441
1258b687
133b0b8a
14293207
151d3a9d
hex15d207

1430023 has 16 divisors (see below), whose sum is σ = 1767744. Its totient is φ = 1128960.

The previous prime is 1429969. The next prime is 1430027. The reversal of 1430023 is 3200341.

It is not a de Polignac number, because 1430023 - 217 = 1298951 is a prime.

It is a Duffinian number.

1430023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1429985 and 1430012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430027) 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, 7161 + ... + 7357.

It is an arithmetic number, because the mean of its divisors is an integer number (110484).

21430023 is an apocalyptic number.

1430023 is a deficient number, since it is larger than the sum of its proper divisors (337721).

1430023 is a wasteful number, since it uses less digits than its factorization.

1430023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1430023 is about 1195.8356910546. The cubic root of 1430023 is about 112.6629211473.

Adding to 1430023 its reverse (3200341), we get a palindrome (4630364).

The spelling of 1430023 in words is "one million, four hundred thirty thousand, twenty-three".

Divisors: 1 7 17 61 119 197 427 1037 1379 3349 7259 12017 23443 84119 204289 1430023