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1430930 = 25143093
BaseRepresentation
bin101011101010110010010
32200200212102
411131112102
5331242210
650400402
715106544
oct5352622
92620772
101430930
11898096
12590102
133b1407
14293694
151d3ea5
hex15d592

1430930 has 8 divisors (see below), whose sum is σ = 2575692. Its totient is φ = 572368.

The previous prime is 1430921. The next prime is 1430939. The reversal of 1430930 is 390341.

It is an interprime number because it is at equal distance from previous prime (1430921) and next prime (1430939).

It can be written as a sum of positive squares in 2 ways, for example, as 1270129 + 160801 = 1127^2 + 401^2 .

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

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1430939) 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 3 ways as a sum of consecutive naturals, for example, 71537 + ... + 71556.

21430930 is an apocalyptic number.

1430930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1430930 is a deficient number, since it is larger than the sum of its proper divisors (1144762).

1430930 is a wasteful number, since it uses less digits than its factorization.

1430930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143100.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1430930 is about 1196.2148636428. The cubic root of 1430930 is about 112.6867351403.

The spelling of 1430930 in words is "one million, four hundred thirty thousand, nine hundred thirty".

Divisors: 1 2 5 10 143093 286186 715465 1430930