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438360005 = 5121372277
BaseRepresentation
bin11010001000001…
…101011111000101
31010112211222212202
4122020031133011
51344210010010
6111255324245
713601666336
oct3210153705
91115758782
10438360005
112054963a6
12102980685
136ca82825
144230c28d
152873e6a5
hex1a20d7c5

438360005 has 8 divisors (see below), whose sum is σ = 526472952. Its totient is φ = 350394048.

The previous prime is 438359993. The next prime is 438360007. The reversal of 438360005 is 500063834.

It can be written as a sum of positive squares in 4 ways, for example, as 32982049 + 405377956 = 5743^2 + 20134^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 438360005 - 210 = 438358981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 438360005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438360007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30074 + ... + 42203.

It is an arithmetic number, because the mean of its divisors is an integer number (65809119).

Almost surely, 2438360005 is an apocalyptic number.

It is an amenable number.

438360005 is a deficient number, since it is larger than the sum of its proper divisors (88112947).

438360005 is a wasteful number, since it uses less digits than its factorization.

438360005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73495.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 438360005 is about 20937.0486220002. The cubic root of 438360005 is about 759.6443424761.

The spelling of 438360005 in words is "four hundred thirty-eight million, three hundred sixty thousand, five".

Divisors: 1 5 1213 6065 72277 361385 87672001 438360005