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190909054 = 2713636361
BaseRepresentation
bin10110110000100…
…00101001111110
3111022020011222201
423120100221332
5342333042204
630535502114
74505462110
oct1330205176
9438204881
10190909054
1198843886
1253b2793a
133072344b
141b4d73b0
1511b609a4
hexb610a7e

190909054 has 8 divisors (see below), whose sum is σ = 327272688. Its totient is φ = 81818160.

The previous prime is 190909027. The next prime is 190909057. The reversal of 190909054 is 450909091.

190909054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190909057) 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, 6818167 + ... + 6818194.

It is an arithmetic number, because the mean of its divisors is an integer number (40909086).

Almost surely, 2190909054 is an apocalyptic number.

190909054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

190909054 is a deficient number, since it is larger than the sum of its proper divisors (136363634).

190909054 is a wasteful number, since it uses less digits than its factorization.

190909054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13636370.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 190909054 is about 13816.9842585131. The cubic root of 190909054 is about 575.8051018044.

Adding to 190909054 its sum of digits (37), we get a palindrome (190909091).

The spelling of 190909054 in words is "one hundred ninety million, nine hundred nine thousand, fifty-four".

Divisors: 1 2 7 14 13636361 27272722 95454527 190909054