Search a number
-
+
28544616 = 2333132151
BaseRepresentation
bin110110011100…
…0111001101000
31222201012212000
41230320321220
524301411431
62455451000
7464424312
oct154707150
958635760
1028544616
1115126aa1
129686a60
135bb5709
143b107b2
15278c9e6
hex1b38e68

28544616 has 32 divisors (see below), whose sum is σ = 79291200. Its totient is φ = 9514800.

The previous prime is 28544609. The next prime is 28544617. The reversal of 28544616 is 61644582.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28544617) 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 7 ways as a sum of consecutive naturals, for example, 65860 + ... + 66291.

It is an arithmetic number, because the mean of its divisors is an integer number (2477850).

Almost surely, 228544616 is an apocalyptic number.

It is an amenable number.

28544616 is an abundant number, since it is smaller than the sum of its proper divisors (50746584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28544616 is a wasteful number, since it uses less digits than its factorization.

28544616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132166 (or 132156 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28544616 is about 5342.7161631515. The cubic root of 28544616 is about 305.6150484170.

It can be divided in two parts, 28 and 544616, that added together give a square (544644 = 7382).

The spelling of 28544616 in words is "twenty-eight million, five hundred forty-four thousand, six hundred sixteen".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 132151 264302 396453 528604 792906 1057208 1189359 1585812 2378718 3171624 3568077 4757436 7136154 9514872 14272308 28544616