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430430020 = 22545747093
BaseRepresentation
bin11001101001111…
…101011101000100
31002222221002222121
4121221331131010
51340142230040
6110413335324
713444411006
oct3151753504
91088832877
10430430020
11200a6a499
12100197544
136b237227
1441246376
1527bc4c4a
hex19a7d744

430430020 has 24 divisors (see below), whose sum is σ = 905900184. Its totient is φ = 171791616.

The previous prime is 430429997. The next prime is 430430053. The reversal of 430430020 is 20034034.

It can be written as a sum of positive squares in 4 ways, for example, as 268173376 + 162256644 = 16376^2 + 12738^2 .

It is a junction number, because it is equal to n+sod(n) for n = 430429976 and 430430003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14407 + ... + 32686.

It is an arithmetic number, because the mean of its divisors is an integer number (37745841).

Almost surely, 2430430020 is an apocalyptic number.

It is an amenable number.

430430020 is an abundant number, since it is smaller than the sum of its proper divisors (475470164).

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

430430020 is a wasteful number, since it uses less digits than its factorization.

430430020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47559 (or 47557 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 430430020 is about 20746.8074652463. The cubic root of 430430020 is about 755.0357540485.

Adding to 430430020 its reverse (20034034), we get a palindrome (450464054).

The spelling of 430430020 in words is "four hundred thirty million, four hundred thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 457 914 1828 2285 4570 9140 47093 94186 188372 235465 470930 941860 21521501 43043002 86086004 107607505 215215010 430430020