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28076652 = 22332389127
BaseRepresentation
bin110101100011…
…0101001101100
31221211102221000
41223012221230
524141423102
62441440300
7460435062
oct153065154
957742830
1028076652
111493744a
1294a0090
135a80706
143a2c032
1526e901c
hex1ac6a6c

28076652 has 96 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 8781696.

The previous prime is 28076651. The next prime is 28076663. The reversal of 28076652 is 25667082.

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 (28076651) 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 31 ways as a sum of consecutive naturals, for example, 221013 + ... + 221139.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 228076652 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 28076652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38707200).

28076652 is an abundant number, since it is smaller than the sum of its proper divisors (49337748).

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

28076652 is a wasteful number, since it uses less digits than its factorization.

28076652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 28076652 is about 5298.7406050872. The cubic root of 28076652 is about 303.9357406884.

The spelling of 28076652 in words is "twenty-eight million, seventy-six thousand, six hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 23 27 36 46 54 69 89 92 108 127 138 178 207 254 267 276 356 381 414 508 534 621 762 801 828 1068 1143 1242 1524 1602 2047 2286 2403 2484 2921 3204 3429 4094 4572 4806 5842 6141 6858 8188 8763 9612 11303 11684 12282 13716 17526 18423 22606 24564 26289 33909 35052 36846 45212 52578 55269 67818 73692 78867 101727 105156 110538 135636 157734 203454 221076 259969 305181 315468 406908 519938 610362 779907 1039876 1220724 1559814 2339721 3119628 4679442 7019163 9358884 14038326 28076652