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129470653 = 1397102673
BaseRepresentation
bin1111011011110…
…01000010111101
3100000121210100101
413231321002331
5231121030103
620503001101
73131324314
oct755710275
9300553311
10129470653
11670a0244
1237439191
1320a91870
14132a327b
15b576a1d
hex7b790bd

129470653 has 8 divisors (see below), whose sum is σ = 140868728. Its totient is φ = 118278144.

The previous prime is 129470641. The next prime is 129470681. The reversal of 129470653 is 356074921.

It can be written as a sum of positive squares in 4 ways, for example, as 13972644 + 115498009 = 3738^2 + 10747^2 .

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-129470653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129470053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50076 + ... + 52597.

It is an arithmetic number, because the mean of its divisors is an integer number (17608591).

Almost surely, 2129470653 is an apocalyptic number.

129470653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129470653 is a deficient number, since it is larger than the sum of its proper divisors (11398075).

129470653 is a wasteful number, since it uses less digits than its factorization.

129470653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102783.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 129470653 is about 11378.5171705280. The cubic root of 129470653 is about 505.8911859106.

The spelling of 129470653 in words is "one hundred twenty-nine million, four hundred seventy thousand, six hundred fifty-three".

Divisors: 1 13 97 1261 102673 1334749 9959281 129470653