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28883008 = 267115861
BaseRepresentation
bin110111000101…
…1100001000000
32000100102001001
41232023201000
524343224013
62511021344
7500334010
oct156134100
960312031
1028883008
1115338260
12980a854
135ca374b
143b9bc40
152807ddd
hex1b8b840

28883008 has 56 divisors (see below), whose sum is σ = 71469504. Its totient is φ = 11251200.

The previous prime is 28883003. The next prime is 28883027. The reversal of 28883008 is 80038882.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×288830082 = 1668456302256128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28883003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1998 + ... + 7858.

Almost surely, 228883008 is an apocalyptic number.

28883008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28883008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35734752).

28883008 is an abundant number, since it is smaller than the sum of its proper divisors (42586496).

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

28883008 is a wasteful number, since it uses less digits than its factorization.

28883008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891 (or 5881 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 28883008 is about 5374.2913951516. The cubic root of 28883008 is about 306.8179803579.

The spelling of 28883008 in words is "twenty-eight million, eight hundred eighty-three thousand, eight".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 56 64 77 88 112 154 176 224 308 352 448 616 704 1232 2464 4928 5861 11722 23444 41027 46888 64471 82054 93776 128942 164108 187552 257884 328216 375104 451297 515768 656432 902594 1031536 1312864 1805188 2063072 2625728 3610376 4126144 7220752 14441504 28883008