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28313050 = 252737757
BaseRepresentation
bin110110000000…
…0010111011010
31222021110012111
41230000113122
524222004200
62450502534
7462441223
oct154002732
958243174
1028313050
1114a89017
129594a4a
135b341ac
143a9024a
1527440ba
hex1b005da

28313050 has 24 divisors (see below), whose sum is σ = 53390556. Its totient is φ = 11168640.

The previous prime is 28313017. The next prime is 28313063. The reversal of 28313050 is 5031382.

It can be written as a sum of positive squares in 6 ways, for example, as 16056049 + 12257001 = 4007^2 + 3501^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229 + ... + 7528.

Almost surely, 228313050 is an apocalyptic number.

28313050 is a deficient number, since it is larger than the sum of its proper divisors (25077506).

28313050 is a wasteful number, since it uses less digits than its factorization.

28313050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7842 (or 7837 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 28313050 is about 5321.0008457056. Note that the first 3 decimals coincide. The cubic root of 28313050 is about 304.7863773324.

The spelling of 28313050 in words is "twenty-eight million, three hundred thirteen thousand, fifty".

Divisors: 1 2 5 10 25 50 73 146 365 730 1825 3650 7757 15514 38785 77570 193925 387850 566261 1132522 2831305 5662610 14156525 28313050