Search a number
-
+
28100495 = 517473217
BaseRepresentation
bin110101100110…
…0011110001111
31221212122122002
41223030132033
524143203440
62442142515
7460564433
oct153143617
957778562
1028100495
1114953355
1294b1a3b
135a8b517
143a369c3
152701115
hex1acc78f

28100495 has 8 divisors (see below), whose sum is σ = 33750384. Its totient is φ = 22460544.

The previous prime is 28100483. The next prime is 28100497. The reversal of 28100495 is 59400182.

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 28100495 - 216 = 28034959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28100497) 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, 7127 + ... + 10343.

It is an arithmetic number, because the mean of its divisors is an integer number (4218798).

Almost surely, 228100495 is an apocalyptic number.

28100495 is a deficient number, since it is larger than the sum of its proper divisors (5649889).

28100495 is a wasteful number, since it uses less digits than its factorization.

28100495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 28100495 is about 5300.9900018770. The cubic root of 28100495 is about 304.0217515311.

The spelling of 28100495 in words is "twenty-eight million, one hundred thousand, four hundred ninety-five".

Divisors: 1 5 1747 3217 8735 16085 5620099 28100495