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189069755 = 575401993
BaseRepresentation
bin10110100010011…
…11100110111011
3111011202201221112
423101033212323
5341400213010
630432230535
74454031530
oct1321174673
9434681845
10189069755
11977a79a6
125339b44b
133022b1c4
141b178d87
15118eaa05
hexb44f9bb

189069755 has 8 divisors (see below), whose sum is σ = 259295712. Its totient is φ = 129647808.

The previous prime is 189069743. The next prime is 189069757. The reversal of 189069755 is 557960981.

It is a happy number.

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 189069755 - 222 = 184875451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189069757) by changing a digit.

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, 2700962 + ... + 2701031.

It is an arithmetic number, because the mean of its divisors is an integer number (32411964).

Almost surely, 2189069755 is an apocalyptic number.

189069755 is a deficient number, since it is larger than the sum of its proper divisors (70225957).

189069755 is an equidigital number, since it uses as much as digits as its factorization.

189069755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5402005.

The product of its (nonzero) digits is 680400, while the sum is 50.

The square root of 189069755 is about 13750.2638156510. The cubic root of 189069755 is about 573.9499474783.

The spelling of 189069755 in words is "one hundred eighty-nine million, sixty-nine thousand, seven hundred fifty-five".

Divisors: 1 5 7 35 5401993 27009965 37813951 189069755