Search a number
-
+
28056107829 = 317095472227
BaseRepresentation
bin11010001000010001…
…100011101100110101
32200102021111221121210
4122020101203230311
5424424330422304
620515551432033
72012153660511
oct321021435465
980367457553
1028056107829
1110997a3a082
12552bb25619
132851734249
1415021d7141
15ae314ac89
hex688463b35

28056107829 has 8 divisors (see below), whose sum is σ = 37430039520. Its totient is φ = 18693124016.

The previous prime is 28056107803. The next prime is 28056107837. The reversal of 28056107829 is 92870165082.

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

It is a cyclic number.

It is not a de Polignac number, because 28056107829 - 217 = 28055976757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056107869) 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, 2730987 + ... + 2741240.

It is an arithmetic number, because the mean of its divisors is an integer number (4678754940).

Almost surely, 228056107829 is an apocalyptic number.

It is an amenable number.

28056107829 is a deficient number, since it is larger than the sum of its proper divisors (9373931691).

28056107829 is a wasteful number, since it uses less digits than its factorization.

28056107829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473939.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 28056107829 in words is "twenty-eight billion, fifty-six million, one hundred seven thousand, eight hundred twenty-nine".

Divisors: 1 3 1709 5127 5472227 16416681 9352035943 28056107829