Search a number
-
+
28954765 = 571943541
BaseRepresentation
bin110111001110…
…1000010001101
32000111001110201
41232131002031
524403023030
62512333501
7501053140
oct156350215
960431421
1028954765
1115387164
129844291
135cca2c8
143bba057
15281e2ca
hex1b9d08d

28954765 has 16 divisors (see below), whose sum is σ = 41800320. Its totient is φ = 18809280.

The previous prime is 28954763. The next prime is 28954771. The reversal of 28954765 is 56745982.

It is not a de Polignac number, because 28954765 - 21 = 28954763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28954763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21106 + ... + 22435.

It is an arithmetic number, because the mean of its divisors is an integer number (2612520).

Almost surely, 228954765 is an apocalyptic number.

It is an amenable number.

28954765 is a deficient number, since it is larger than the sum of its proper divisors (12845555).

28954765 is a wasteful number, since it uses less digits than its factorization.

28954765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43572.

The product of its digits is 604800, while the sum is 46.

The square root of 28954765 is about 5380.9632037396. The cubic root of 28954765 is about 307.0718566215.

The spelling of 28954765 in words is "twenty-eight million, nine hundred fifty-four thousand, seven hundred sixty-five".

Divisors: 1 5 7 19 35 95 133 665 43541 217705 304787 827279 1523935 4136395 5790953 28954765