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28110024 = 2333181719
BaseRepresentation
bin110101100111…
…0110011001000
31221220010201000
41223032303020
524144010044
62442255000
7460634265
oct153166310
957803630
1028110024
111495a528
1294b7460
135a92967
143a3a26c
152703d69
hex1acecc8

28110024 has 64 divisors (see below), whose sum is σ = 78624000. Its totient is φ = 9305280.

The previous prime is 28110013. The next prime is 28110041. The reversal of 28110024 is 42001182.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 28109979 and 28110006.

It is an unprimeable number.

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, 38737 + ... + 39455.

It is an arithmetic number, because the mean of its divisors is an integer number (1228500).

Almost surely, 228110024 is an apocalyptic number.

28110024 is a gapful number since it is divisible by the number (24) 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 28110024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39312000).

28110024 is an abundant number, since it is smaller than the sum of its proper divisors (50513976).

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

28110024 is a wasteful number, since it uses less digits than its factorization.

28110024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 28110024 is about 5301.8887200695. Note that the first 3 decimals coincide. The cubic root of 28110024 is about 304.0561126799.

The spelling of 28110024 in words is "twenty-eight million, one hundred ten thousand, twenty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 181 216 362 543 719 724 1086 1438 1448 1629 2157 2172 2876 3258 4314 4344 4887 5752 6471 6516 8628 9774 12942 13032 17256 19413 19548 25884 38826 39096 51768 77652 130139 155304 260278 390417 520556 780834 1041112 1171251 1561668 2342502 3123336 3513753 4685004 7027506 9370008 14055012 28110024