Search a number
-
+
28930175 = 521768071
BaseRepresentation
bin110111001011…
…1000001111111
32000102210201222
41232113001333
524401231200
62512023555
7500621351
oct156270177
960383658
1028930175
111536a73a
129831bbb
135cbc061
143bb10d1
152816d85
hex1b9707f

28930175 has 12 divisors (see below), whose sum is σ = 37984176. Its totient is φ = 21782400.

The previous prime is 28930169. The next prime is 28930193. The reversal of 28930175 is 57103982.

It is not a de Polignac number, because 28930175 - 214 = 28913791 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33611 + ... + 34460.

It is an arithmetic number, because the mean of its divisors is an integer number (3165348).

Almost surely, 228930175 is an apocalyptic number.

28930175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28930175 is a deficient number, since it is larger than the sum of its proper divisors (9054001).

28930175 is a wasteful number, since it uses less digits than its factorization.

28930175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68098 (or 68093 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28930175 is about 5378.6778115072. The cubic root of 28930175 is about 306.9849044911.

The spelling of 28930175 in words is "twenty-eight million, nine hundred thirty thousand, one hundred seventy-five".

Divisors: 1 5 17 25 85 425 68071 340355 1157207 1701775 5786035 28930175