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30430 = 2517179
BaseRepresentation
bin111011011011110
31112202001
413123132
51433210
6352514
7154501
oct73336
945661
1030430
1120954
121573a
1310b0a
14b138
15903a
hex76de

30430 has 16 divisors (see below), whose sum is σ = 58320. Its totient is φ = 11392.

The previous prime is 30427. The next prime is 30431. The reversal of 30430 is 3403.

30430 = 762 + 772 + ... + 802.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431) 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, 81 + ... + 259.

It is an arithmetic number, because the mean of its divisors is an integer number (3645).

230430 is an apocalyptic number.

30430 is a deficient number, since it is larger than the sum of its proper divisors (27890).

30430 is a wasteful number, since it uses less digits than its factorization.

30430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 30430 is about 174.4419674276. The cubic root of 30430 is about 31.2200780254.

Adding to 30430 its reverse (3403), we get a palindrome (33833).

The spelling of 30430 in words is "thirty thousand, four hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 179 358 895 1790 3043 6086 15215 30430