Search a number
-
+
130939678 = 21719202693
BaseRepresentation
bin1111100110111…
…11101100011110
3100010101102110201
413303133230132
5232010032203
620554254114
73146653222
oct763375436
9303342421
10130939678
1167a03a11
1237a2733a
13211873cc
1413566782
15b766e1d
hex7cdfb1e

130939678 has 16 divisors (see below), whose sum is σ = 218909520. Its totient is φ = 58375296.

The previous prime is 130939673. The next prime is 130939717. The reversal of 130939678 is 876939031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130939673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100701 + ... + 101992.

It is an arithmetic number, because the mean of its divisors is an integer number (13681845).

Almost surely, 2130939678 is an apocalyptic number.

130939678 is a deficient number, since it is larger than the sum of its proper divisors (87969842).

130939678 is a wasteful number, since it uses less digits than its factorization.

130939678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202731.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 130939678 is about 11442.8876600271. The cubic root of 130939678 is about 507.7973415082.

The spelling of 130939678 in words is "one hundred thirty million, nine hundred thirty-nine thousand, six hundred seventy-eight".

Divisors: 1 2 17 19 34 38 323 646 202693 405386 3445781 3851167 6891562 7702334 65469839 130939678