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20678134 = 2101102367
BaseRepresentation
bin100111011100…
…0010111110110
31102220120001211
41032320113312
520243200014
62015112034
7340522051
oct116702766
942816054
1020678134
1110743874
126b1261a
13438cca9
142a63a98
151c36cc4
hex13b85f6

20678134 has 8 divisors (see below), whose sum is σ = 31324608. Its totient is φ = 10236600.

The previous prime is 20678123. The next prime is 20678149. The reversal of 20678134 is 43187602.

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

It is a junction number, because it is equal to n+sod(n) for n = 20678096 and 20678105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50982 + ... + 51385.

It is an arithmetic number, because the mean of its divisors is an integer number (3915576).

Almost surely, 220678134 is an apocalyptic number.

20678134 is a deficient number, since it is larger than the sum of its proper divisors (10646474).

20678134 is a wasteful number, since it uses less digits than its factorization.

20678134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102470.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20678134 is about 4547.3216292671. The cubic root of 20678134 is about 274.4756244371.

It can be divided in two parts, 2067 and 8134, that added together give a palindrome (10201).

The spelling of 20678134 in words is "twenty million, six hundred seventy-eight thousand, one hundred thirty-four".

Divisors: 1 2 101 202 102367 204734 10339067 20678134