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641086430 = 25239268237
BaseRepresentation
bin100110001101100…
…011001111011110
31122200022120020212
4212031203033132
52303104231210
6143340412422
721613100435
oct4615431736
91580276225
10641086430
112a99707a6
1215a847112
13a2a82aaa
146120011c
153b436805
hex263633de

641086430 has 16 divisors (see below), whose sum is σ = 1158788160. Its totient is φ = 255360672.

The previous prime is 641086399. The next prime is 641086451. The reversal of 641086430 is 34680146.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 131729 + ... + 136508.

It is an arithmetic number, because the mean of its divisors is an integer number (72424260).

Almost surely, 2641086430 is an apocalyptic number.

641086430 is a deficient number, since it is larger than the sum of its proper divisors (517701730).

641086430 is a wasteful number, since it uses less digits than its factorization.

641086430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268483.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 641086430 is about 25319.6846346869. The cubic root of 641086430 is about 862.2612341956.

The spelling of 641086430 in words is "six hundred forty-one million, eighty-six thousand, four hundred thirty".

Divisors: 1 2 5 10 239 478 1195 2390 268237 536474 1341185 2682370 64108643 128217286 320543215 641086430