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188888051 = 11111715373
BaseRepresentation
bin10110100001000…
…11001111110011
3111011102111200202
423100203033303
5341323404201
630424305415
74452344012
oct1320431763
9434374622
10188888051
1197693430
125331226b
13301965a1
141b12ca79
15118b1c6b
hexb4233f3

188888051 has 8 divisors (see below), whose sum is σ = 206257584. Its totient is φ = 171551520.

The previous prime is 188888041. The next prime is 188888057. The reversal of 188888051 is 150888881.

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

It is a cyclic number.

It is not a de Polignac number, because 188888051 - 214 = 188871667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188887987 and 188888005.

It is not an unprimeable number, because it can be changed into a prime (188888057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4601 + ... + 19973.

It is an arithmetic number, because the mean of its divisors is an integer number (25782198).

Almost surely, 2188888051 is an apocalyptic number.

188888051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

188888051 is a deficient number, since it is larger than the sum of its proper divisors (17369533).

188888051 is a wasteful number, since it uses less digits than its factorization.

188888051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16501.

The product of its (nonzero) digits is 163840, while the sum is 47.

The square root of 188888051 is about 13743.6549360059. The cubic root of 188888051 is about 573.7660251867.

The spelling of 188888051 in words is "one hundred eighty-eight million, eight hundred eighty-eight thousand, fifty-one".

Divisors: 1 11 1117 12287 15373 169103 17171641 188888051