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430420 = 22521521
BaseRepresentation
bin1101001000101010100
3210212102111
41221011110
5102233140
613120404
73441604
oct1510524
9725374
10430420
11274421
12189104
13120bb3
14b2c04
15877ea
hex69154

430420 has 12 divisors (see below), whose sum is σ = 903924. Its totient is φ = 172160.

The previous prime is 430411. The next prime is 430427. The reversal of 430420 is 24034.

It can be written as a sum of positive squares in 2 ways, for example, as 188356 + 242064 = 434^2 + 492^2 .

It is a super-2 number, since 2×4304202 = 370522752800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 430420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430427) by changing a digit.

430420 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, 10741 + ... + 10780.

It is an arithmetic number, because the mean of its divisors is an integer number (75327).

2430420 is an apocalyptic number.

It is an amenable number.

430420 is an abundant number, since it is smaller than the sum of its proper divisors (473504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

430420 is a wasteful number, since it uses less digits than its factorization.

430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21530 (or 21528 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 430420 is about 656.0640212662. The cubic root of 430420 is about 75.5029895166.

Adding to 430420 its reverse (24034), we get a palindrome (454454).

The spelling of 430420 in words is "four hundred thirty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 21521 43042 86084 107605 215210 430420