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188886001 = 1297145633
BaseRepresentation
bin10110100001000…
…10101111110001
3111011102101212211
423100202233301
5341323323001
630424252121
74452335023
oct1320425761
9434371784
10188886001
1197691937
1253311041
1330195685
141b12c013
15118b1351
hexb422bf1

188886001 has 4 divisors (see below), whose sum is σ = 189032932. Its totient is φ = 188739072.

The previous prime is 188885987. The next prime is 188886013. The reversal of 188886001 is 100688881.

188886001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113976976 + 74909025 = 10676^2 + 8655^2 .

It is a cyclic number.

It is not a de Polignac number, because 188886001 - 211 = 188883953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188886101) 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, 71520 + ... + 74113.

It is an arithmetic number, because the mean of its divisors is an integer number (47258233).

Almost surely, 2188886001 is an apocalyptic number.

It is an amenable number.

188886001 is a deficient number, since it is larger than the sum of its proper divisors (146931).

188886001 is a wasteful number, since it uses less digits than its factorization.

188886001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146930.

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 188886001 is about 13743.5803559335. The cubic root of 188886001 is about 573.7639494870.

The spelling of 188886001 in words is "one hundred eighty-eight million, eight hundred eighty-six thousand, one".

Divisors: 1 1297 145633 188886001