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28464968 = 2374311821
BaseRepresentation
bin110110010010…
…1011101001000
31222120011121002
41230211131020
524241334333
62454034132
7463643150
oct154453510
958504532
1028464968
1115082174
129648948
135b8839c
143acd760
1527740e8
hex1b25748

28464968 has 32 divisors (see below), whose sum is σ = 62420160. Its totient is φ = 11914560.

The previous prime is 28464893. The next prime is 28464973. The reversal of 28464968 is 86946482.

It is a super-3 number, since 3×284649683 (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3503 + ... + 8318.

It is an arithmetic number, because the mean of its divisors is an integer number (1950630).

Almost surely, 228464968 is an apocalyptic number.

28464968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28464968 is an abundant number, since it is smaller than the sum of its proper divisors (33955192).

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

28464968 is a wasteful number, since it uses less digits than its factorization.

28464968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11877 (or 11873 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 28464968 is about 5335.2570697203. The cubic root of 28464968 is about 305.3305312168.

The spelling of 28464968 in words is "twenty-eight million, four hundred sixty-four thousand, nine hundred sixty-eight".

Divisors: 1 2 4 7 8 14 28 43 56 86 172 301 344 602 1204 2408 11821 23642 47284 82747 94568 165494 330988 508303 661976 1016606 2033212 3558121 4066424 7116242 14232484 28464968