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28285054 = 272349827
BaseRepresentation
bin110101111100…
…1100001111110
31222020000210121
41223321201332
524220110204
62450125154
7462263500
oct153714176
958200717
1028285054
1114a69a86
1295807ba
135b24525
143a83d70
15273ab54
hex1af987e

28285054 has 24 divisors (see below), whose sum is σ = 49555800. Its totient is φ = 12072816.

The previous prime is 28285031. The next prime is 28285069. The reversal of 28285054 is 45058282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33789 + ... + 34615.

It is an arithmetic number, because the mean of its divisors is an integer number (2064825).

Almost surely, 228285054 is an apocalyptic number.

28285054 is a deficient number, since it is larger than the sum of its proper divisors (21270746).

28285054 is a wasteful number, since it uses less digits than its factorization.

28285054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1185 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 28285054 is about 5318.3694869762. The cubic root of 28285054 is about 304.6858864118.

The spelling of 28285054 in words is "twenty-eight million, two hundred eighty-five thousand, fifty-four".

Divisors: 1 2 7 14 49 98 349 698 827 1654 2443 4886 5789 11578 17101 34202 40523 81046 288623 577246 2020361 4040722 14142527 28285054