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438269230 = 2572894427
BaseRepresentation
bin11010000111110…
…111010100101110
31010112200101100201
4122013313110232
51344144103410
6111253344114
713601140600
oct3207672456
91115611321
10438269230
11205434183
1210293803a
136ca50409
14422c7170
152872283a
hex1a1f752e

438269230 has 24 divisors (see below), whose sum is σ = 917683128. Its totient is φ = 150263568.

The previous prime is 438269207. The next prime is 438269233. The reversal of 438269230 is 32962834.

It is a self number, because there is not a number n which added to its sum of digits gives 438269230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438269233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 446724 + ... + 447703.

It is an arithmetic number, because the mean of its divisors is an integer number (38236797).

Almost surely, 2438269230 is an apocalyptic number.

438269230 is an abundant number, since it is smaller than the sum of its proper divisors (479413898).

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

438269230 is a wasteful number, since it uses less digits than its factorization.

438269230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894448 (or 894441 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 438269230 is about 20934.8807018335. The cubic root of 438269230 is about 759.5919034802.

The spelling of 438269230 in words is "four hundred thirty-eight million, two hundred sixty-nine thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 894427 1788854 4472135 6260989 8944270 12521978 31304945 43826923 62609890 87653846 219134615 438269230