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190388041 = 976919489
BaseRepresentation
bin10110101100100…
…01011101001001
3111021020201021221
423112101131021
5342214404131
630520402041
74501162114
oct1326213511
9437221257
10190388041
1198518398
1253916321
13305a025c
141b3dd57b
1511aab411
hexb591749

190388041 has 4 divisors (see below), whose sum is σ = 190417300. Its totient is φ = 190358784.

The previous prime is 190388039. The next prime is 190388053. The reversal of 190388041 is 140883091.

It is a happy number.

190388041 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 26010000 + 164378041 = 5100^2 + 12821^2 .

It is a cyclic number.

It is not a de Polignac number, because 190388041 - 21 = 190388039 is a prime.

It is a super-3 number, since 3×1903880413 (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190387988 and 190388006.

It is not an unprimeable number, because it can be changed into a prime (190388141) 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, 25 + ... + 19513.

It is an arithmetic number, because the mean of its divisors is an integer number (47604325).

Almost surely, 2190388041 is an apocalyptic number.

It is an amenable number.

190388041 is a deficient number, since it is larger than the sum of its proper divisors (29259).

190388041 is an equidigital number, since it uses as much as digits as its factorization.

190388041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 190388041 is about 13798.1172991100. The cubic root of 190388041 is about 575.2808115466.

The spelling of 190388041 in words is "one hundred ninety million, three hundred eighty-eight thousand, forty-one".

Divisors: 1 9769 19489 190388041