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189948703 = 7129121019
BaseRepresentation
bin10110101001001…
…10001100011111
3111020102101122011
423110212030133
5342111324303
630503132051
74464352210
oct1324461437
9436371564
10189948703
11982482aa
1253744027
13304782a9
141b327407
1511a2116d
hexb52631f

189948703 has 8 divisors (see below), whose sum is σ = 217262720. Its totient is φ = 162679320.

The previous prime is 189948691. The next prime is 189948709. The reversal of 189948703 is 307849981.

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 a de Polignac number, because none of the positive numbers 2k-189948703 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 (189948709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473 + ... + 19546.

It is an arithmetic number, because the mean of its divisors is an integer number (27157840).

Almost surely, 2189948703 is an apocalyptic number.

189948703 is a deficient number, since it is larger than the sum of its proper divisors (27314017).

189948703 is a wasteful number, since it uses less digits than its factorization.

189948703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22317.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 189948703 is about 13782.1878887207. The cubic root of 189948703 is about 574.8379661897.

The spelling of 189948703 in words is "one hundred eighty-nine million, nine hundred forty-eight thousand, seven hundred three".

Divisors: 1 7 1291 9037 21019 147133 27135529 189948703