Search a number
-
+
28470683 = 191498457
BaseRepresentation
bin110110010011…
…0110110011011
31222120110102202
41230212312123
524242030213
62454120415
7463665623
oct154466633
958513382
1028470683
111508649a
12965010b
135b8ab77
143ad1883
152775b58
hex1b26d9b

28470683 has 4 divisors (see below), whose sum is σ = 29969160. Its totient is φ = 26972208.

The previous prime is 28470653. The next prime is 28470697. The reversal of 28470683 is 38607482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38607482 = 219303741.

It is a cyclic number.

It is not a de Polignac number, because 28470683 - 218 = 28208539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28470613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749210 + ... + 749247.

It is an arithmetic number, because the mean of its divisors is an integer number (7492290).

Almost surely, 228470683 is an apocalyptic number.

28470683 is a deficient number, since it is larger than the sum of its proper divisors (1498477).

28470683 is a wasteful number, since it uses less digits than its factorization.

28470683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498476.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28470683 is about 5335.7926309031. The cubic root of 28470683 is about 305.3509639023.

The spelling of 28470683 in words is "twenty-eight million, four hundred seventy thousand, six hundred eighty-three".

Divisors: 1 19 1498457 28470683