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405443043 = 3318618069
BaseRepresentation
bin11000001010101…
…001000111100011
31001020220122022000
4120022221013203
51312243134133
6104122015043
713022131455
oct3012510743
91036818260
10405443043
111989533a5
12b3947483
1365cc8c35
143bbc02d5
15258db413
hex182a91e3

405443043 has 16 divisors (see below), whose sum is σ = 601053600. Its totient is φ = 270116640.

The previous prime is 405443039. The next prime is 405443053. The reversal of 405443043 is 340344504.

It is not a de Polignac number, because 405443043 - 22 = 405443039 is a prime.

It is a super-2 number, since 2×4054430432 = 328768122234199698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 405442998 and 405443016.

It is not an unprimeable number, because it can be changed into a prime (405443023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46213 + ... + 54281.

It is an arithmetic number, because the mean of its divisors is an integer number (37565850).

Almost surely, 2405443043 is an apocalyptic number.

405443043 is a deficient number, since it is larger than the sum of its proper divisors (195610557).

405443043 is a wasteful number, since it uses less digits than its factorization.

405443043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9939 (or 9933 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 405443043 is about 20135.6162806108. The cubic root of 405443043 is about 740.1333111420.

Adding to 405443043 its reverse (340344504), we get a palindrome (745787547).

The spelling of 405443043 in words is "four hundred five million, four hundred forty-three thousand, forty-three".

Divisors: 1 3 9 27 1861 5583 8069 16749 24207 50247 72621 217863 15016409 45049227 135147681 405443043