Search a number
-
+
28060445 = 57863929
BaseRepresentation
bin110101100001…
…0101100011101
31221210121200202
41223002230131
524140413240
62441233245
7460336610
oct153025435
957717622
1028060445
1114926256
129492825
135a7621a
143a26177
1526e4315
hex1ac2b1d

28060445 has 16 divisors (see below), whose sum is σ = 38568960. Its totient is φ = 19198464.

The previous prime is 28060433. The next prime is 28060447. The reversal of 28060445 is 54406082.

It is a cyclic number.

It is not a de Polignac number, because 28060445 - 28 = 28060189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28060447) 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, 29741 + ... + 30669.

It is an arithmetic number, because the mean of its divisors is an integer number (2410560).

Almost surely, 228060445 is an apocalyptic number.

It is an amenable number.

28060445 is a deficient number, since it is larger than the sum of its proper divisors (10508515).

28060445 is an equidigital number, since it uses as much as digits as its factorization.

28060445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 28060445 is about 5297.2110586610. The cubic root of 28060445 is about 303.8772480227.

The spelling of 28060445 in words is "twenty-eight million, sixty thousand, four hundred forty-five".

Divisors: 1 5 7 35 863 929 4315 4645 6041 6503 30205 32515 801727 4008635 5612089 28060445