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28825498 = 2138912457
BaseRepresentation
bin110110111110…
…1011110011010
32000020111011001
41231331132122
524334403443
62505455214
7500004232
oct155753632
960214131
1028825498
11152a9029
1297a150a
135c83510
143b84cc2
1527e5d4d
hex1b7d79a

28825498 has 16 divisors (see below), whose sum is σ = 47091240. Its totient is φ = 13153536.

The previous prime is 28825487. The next prime is 28825499. The reversal of 28825498 is 89452882.

It can be written as a sum of positive squares in 4 ways, for example, as 20223009 + 8602489 = 4497^2 + 2933^2 .

It is not an unprimeable number, because it can be changed into a prime (28825499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3915 + ... + 8542.

Almost surely, 228825498 is an apocalyptic number.

28825498 is a deficient number, since it is larger than the sum of its proper divisors (18265742).

28825498 is a wasteful number, since it uses less digits than its factorization.

28825498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12561.

The product of its digits is 368640, while the sum is 46.

The square root of 28825498 is about 5368.9382563036. The cubic root of 28825498 is about 306.6142062647.

The spelling of 28825498 in words is "twenty-eight million, eight hundred twenty-five thousand, four hundred ninety-eight".

Divisors: 1 2 13 26 89 178 1157 2314 12457 24914 161941 323882 1108673 2217346 14412749 28825498