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188830641 = 3312030437
BaseRepresentation
bin10110100000101…
…01001110110001
3111011022120221110
423100111032301
5341320040031
630423143533
74452014436
oct1320251661
9434276843
10188830641
119765428a
12532a4ba9
133017640c
141b115b8d
151189ec46
hexb4153b1

188830641 has 8 divisors (see below), whose sum is σ = 259896064. Its totient is φ = 121826160.

The previous prime is 188830639. The next prime is 188830661. The reversal of 188830641 is 146038881.

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

It is not a de Polignac number, because 188830641 - 21 = 188830639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 188830641.

It is not an unprimeable number, because it can be changed into a prime (188830661) 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 7 ways as a sum of consecutive naturals, for example, 1015126 + ... + 1015311.

It is an arithmetic number, because the mean of its divisors is an integer number (32487008).

Almost surely, 2188830641 is an apocalyptic number.

It is an amenable number.

188830641 is a deficient number, since it is larger than the sum of its proper divisors (71065423).

188830641 is a wasteful number, since it uses less digits than its factorization.

188830641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030471.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 188830641 is about 13741.5661771139. The cubic root of 188830641 is about 573.7078897901.

The spelling of 188830641 in words is "one hundred eighty-eight million, eight hundred thirty thousand, six hundred forty-one".

Divisors: 1 3 31 93 2030437 6091311 62943547 188830641