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28848764 = 22719211257
BaseRepresentation
bin110111000001…
…1001001111100
32000021200001202
41232003021330
524341130024
62510155032
7500132120
oct156031174
960250052
1028848764
111531455a
1297b2a78
135c90c99
143b8d580
1527ecbae
hex1b8327c

28848764 has 48 divisors (see below), whose sum is σ = 61259520. Its totient is φ = 11612160.

The previous prime is 28848761. The next prime is 28848767. The reversal of 28848764 is 46784882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28848761) and next prime (28848767).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28848761) 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, 112124 + ... + 112380.

It is an arithmetic number, because the mean of its divisors is an integer number (1276240).

Almost surely, 228848764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28848764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30629760).

28848764 is an abundant number, since it is smaller than the sum of its proper divisors (32410756).

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

28848764 is a wasteful number, since it uses less digits than its factorization.

28848764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 496 counting only the distinct ones).

The product of its digits is 688128, while the sum is 47.

The square root of 28848764 is about 5371.1045418982. The cubic root of 28848764 is about 306.6966768573.

The spelling of 28848764 in words is "twenty-eight million, eight hundred forty-eight thousand, seven hundred sixty-four".

Divisors: 1 2 4 7 14 19 28 38 76 133 211 257 266 422 514 532 844 1028 1477 1799 2954 3598 4009 4883 5908 7196 8018 9766 16036 19532 28063 34181 54227 56126 68362 108454 112252 136724 216908 379589 759178 1030313 1518356 2060626 4121252 7212191 14424382 28848764