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28983460 = 22511131743
BaseRepresentation
bin110111010010…
…0000010100100
32000112111211111
41232210002210
524404432320
62513114404
7501232612
oct156440244
960474744
1028983460
11153a6780
129858a04
13600a39c
143bc66b2
152827a5a
hex1ba40a4

28983460 has 24 divisors (see below), whose sum is σ = 66398976. Its totient is φ = 10539360.

The previous prime is 28983431. The next prime is 28983467. The reversal of 28983460 is 6438982.

It is not an unprimeable number, because it can be changed into a prime (28983467) 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, 65652 + ... + 66091.

It is an arithmetic number, because the mean of its divisors is an integer number (2766624).

Almost surely, 228983460 is an apocalyptic number.

28983460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28983460 is an abundant number, since it is smaller than the sum of its proper divisors (37415516).

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

28983460 is a wasteful number, since it uses less digits than its factorization.

28983460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131763 (or 131761 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 28983460 is about 5383.6288876556. The cubic root of 28983460 is about 307.1732621269.

The spelling of 28983460 in words is "twenty-eight million, nine hundred eighty-three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 131743 263486 526972 658715 1317430 1449173 2634860 2898346 5796692 7245865 14491730 28983460