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206153194 = 2137928969
BaseRepresentation
bin11000100100110…
…10010111101010
3112100220200000111
430102122113222
5410233400234
632242324534
75052162502
oct1422322752
9470820014
10206153194
11a6405a45
125905974a
133392cc50
141d544a02
1513172664
hexc49a5ea

206153194 has 8 divisors (see below), whose sum is σ = 333016740. Its totient is φ = 95147616.

The previous prime is 206153191. The next prime is 206153231. The reversal of 206153194 is 491351602.

206153194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205492225 + 660969 = 14335^2 + 813^2 .

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

It is not an unprimeable number, because it can be changed into a prime (206153191) 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, 3964459 + ... + 3964510.

Almost surely, 2206153194 is an apocalyptic number.

206153194 is a deficient number, since it is larger than the sum of its proper divisors (126863546).

206153194 is a wasteful number, since it uses less digits than its factorization.

206153194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928984.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 206153194 is about 14358.0358684606. The cubic root of 206153194 is about 590.7404225174.

It can be divided in two parts, 2061 and 53194, that added together give a palindrome (55255).

The spelling of 206153194 in words is "two hundred six million, one hundred fifty-three thousand, one hundred ninety-four".

Divisors: 1 2 13 26 7928969 15857938 103076597 206153194