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28636482 = 2372257379
BaseRepresentation
bin110110100111…
…1010101000010
31222212212212110
41231033111002
524312331412
62501440150
7465256200
oct155172502
958785773
1028636482
111518a016
129710056
135c18484
143b36070
1527a9d3c
hex1b4f542

28636482 has 48 divisors (see below), whose sum is σ = 67059360. Its totient is φ = 8128512.

The previous prime is 28636481. The next prime is 28636493. The reversal of 28636482 is 28463682.

It is a self number, because there is not a number n which added to its sum of digits gives 28636482.

It is not an unprimeable number, because it can be changed into a prime (28636481) 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 23 ways as a sum of consecutive naturals, for example, 75369 + ... + 75747.

It is an arithmetic number, because the mean of its divisors is an integer number (1397070).

Almost surely, 228636482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28636482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33529680).

28636482 is an abundant number, since it is smaller than the sum of its proper divisors (38422878).

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

28636482 is a wasteful number, since it uses less digits than its factorization.

28636482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 648 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 28636482 is about 5351.3065694277. The cubic root of 28636482 is about 305.9425540417.

The spelling of 28636482 in words is "twenty-eight million, six hundred thirty-six thousand, four hundred eighty-two".

Divisors: 1 2 3 6 7 14 21 42 49 98 147 257 294 379 514 758 771 1137 1542 1799 2274 2653 3598 5306 5397 7959 10794 12593 15918 18571 25186 37142 37779 55713 75558 97403 111426 194806 292209 584418 681821 1363642 2045463 4090926 4772747 9545494 14318241 28636482