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190044449 = 727149207
BaseRepresentation
bin10110101001111…
…01100100100001
3111020121020222022
423110331210201
5342122410244
630505151225
74465231310
oct1324754441
9436536868
10190044449
1198303231
125378b515
13304aca4a
141b350277
1511a3e6ee
hexb53d921

190044449 has 4 divisors (see below), whose sum is σ = 217193664. Its totient is φ = 162895236.

The previous prime is 190044433. The next prime is 190044499. The reversal of 190044449 is 944440091.

190044449 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 190044449 - 24 = 190044433 is a prime.

It is a super-2 number, since 2×1900444492 = 72233785191427202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (190044499) 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, 13574597 + ... + 13574610.

It is an arithmetic number, because the mean of its divisors is an integer number (54298416).

Almost surely, 2190044449 is an apocalyptic number.

It is an amenable number.

190044449 is a deficient number, since it is larger than the sum of its proper divisors (27149215).

190044449 is an equidigital number, since it uses as much as digits as its factorization.

190044449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27149214.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 190044449 is about 13785.6609924951. The cubic root of 190044449 is about 574.9345347019.

The spelling of 190044449 in words is "one hundred ninety million, forty-four thousand, four hundred forty-nine".

Divisors: 1 7 27149207 190044449