Search a number
-
+
28014745 = 511509359
BaseRepresentation
bin110101011011…
…1100010011001
31221201022000011
41222313202121
524132432440
62440241521
7460056433
oct152674231
957638004
1028014745
11148a4990
1294702a1
135a5b495
143a13653
1526d59ea
hex1ab7899

28014745 has 8 divisors (see below), whose sum is σ = 36673920. Its totient is φ = 20374320.

The previous prime is 28014739. The next prime is 28014757. The reversal of 28014745 is 54741082.

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

It is not a de Polignac number, because 28014745 - 23 = 28014737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254625 + ... + 254734.

It is an arithmetic number, because the mean of its divisors is an integer number (4584240).

Almost surely, 228014745 is an apocalyptic number.

It is an amenable number.

28014745 is a deficient number, since it is larger than the sum of its proper divisors (8659175).

28014745 is a wasteful number, since it uses less digits than its factorization.

28014745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509375.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 28014745 is about 5292.8957102894. The cubic root of 28014745 is about 303.7121908151.

The spelling of 28014745 in words is "twenty-eight million, fourteen thousand, seven hundred forty-five".

Divisors: 1 5 11 55 509359 2546795 5602949 28014745