Search a number
-
+
438134080 = 2651369169
BaseRepresentation
bin11010000111010…
…110010101000000
31010112102111222011
4122013112111000
51344130242310
6111250422304
713600035556
oct3207262500
91115374864
10438134080
1120535168a
12102891994
136ca03a47
144228dbd6
15286e778a
hex1a1d6540

438134080 has 28 divisors (see below), whose sum is σ = 1043307540. Its totient is φ = 175253504.

The previous prime is 438134071. The next prime is 438134089. The reversal of 438134080 is 80431834.

It is an interprime number because it is at equal distance from previous prime (438134071) and next prime (438134089).

It can be written as a sum of positive squares in 2 ways, for example, as 56791296 + 381342784 = 7536^2 + 19528^2 .

It is a super-2 number, since 2×4381340802 = 383922944114892800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438134089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684265 + ... + 684904.

Almost surely, 2438134080 is an apocalyptic number.

438134080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

438134080 is an abundant number, since it is smaller than the sum of its proper divisors (605173460).

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

438134080 is a wasteful number, since it uses less digits than its factorization.

438134080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369186 (or 1369176 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 438134080 is about 20931.6525864538. The cubic root of 438134080 is about 759.5138164712.

The spelling of 438134080 in words is "four hundred thirty-eight million, one hundred thirty-four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 1369169 2738338 5476676 6845845 10953352 13691690 21906704 27383380 43813408 54766760 87626816 109533520 219067040 438134080