Search a number
-
+
430 = 2543
BaseRepresentation
bin110101110
3120221
412232
53210
61554
71153
oct656
9527
10430
11361
122ba
13271
1422a
151da
hex1ae

430 has 8 divisors (see below), whose sum is σ = 792. Its totient is φ = 168.

The previous prime is 421. The next prime is 431. The reversal of 430 is 34.

Adding to 430 its reverse (34), we get a palindrome (464).

It can be divided in two parts, 4 and 30, that multiplied together give a triangular number (120 = T15).

430 is nontrivially palindromic in base 8.

430 is an esthetic number in base 5 and base 8, because in such bases its adjacent digits differ by 1.

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

It is an alternating number because its digits alternate between even and odd.

430 is an undulating number in base 8.

It is a plaindrome in base 14 and base 16.

It is a nialpdrome in base 5 and base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431) by changing a digit.

430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12 + ... + 31.

It is an arithmetic number, because the mean of its divisors is an integer number (99).

430 is a deficient number, since it is larger than the sum of its proper divisors (362).

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

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

The sum of its prime factors is 50.

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 430 is about 20.7364413533. The cubic root of 430 is about 7.5478423143.

The spelling of 430 in words is "four hundred thirty", and thus it is an aban number.

Divisors: 1 2 5 10 43 86 215 430