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188375029 = 3717329429
BaseRepresentation
bin10110011101001…
…01111111110101
3111010110102221221
423032211333311
5341211000104
630405310341
74445106223
oct1316457765
9433412857
10188375029
1197372a47
12531053b1
1330046c1b
141b037b13
151180ec54
hexb3a5ff5

188375029 has 8 divisors (see below), whose sum is σ = 194591160. Its totient is φ = 182218176.

The previous prime is 188375027. The next prime is 188375059. The reversal of 188375029 is 920573881.

It can be written as a sum of positive squares in 4 ways, for example, as 152399025 + 35976004 = 12345^2 + 5998^2 .

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 188375029 - 21 = 188375027 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188375027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8314 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (24323895).

Almost surely, 2188375029 is an apocalyptic number.

It is an amenable number.

188375029 is a deficient number, since it is larger than the sum of its proper divisors (6216131).

188375029 is a wasteful number, since it uses less digits than its factorization.

188375029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29639.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 188375029 is about 13724.9782877788. The cubic root of 188375029 is about 573.2461026098.

The spelling of 188375029 in words is "one hundred eighty-eight million, three hundred seventy-five thousand, twenty-nine".

Divisors: 1 37 173 6401 29429 1088873 5091217 188375029