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28650554 = 241349397
BaseRepresentation
bin110110101001…
…0110000111010
31222220121011122
41231102300322
524313304204
62502025242
7465345212
oct155226072
958817148
1028650554
1115199649
129718222
135c219ba
143b3b242
1527ae0be
hex1b52c3a

28650554 has 8 divisors (see below), whose sum is σ = 44024148. Its totient is φ = 13975840.

The previous prime is 28650551. The next prime is 28650563. The reversal of 28650554 is 45505682.

It can be written as a sum of positive squares in 2 ways, for example, as 26759929 + 1890625 = 5173^2 + 1375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28650551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174617 + ... + 174780.

Almost surely, 228650554 is an apocalyptic number.

28650554 is a deficient number, since it is larger than the sum of its proper divisors (15373594).

28650554 is a wasteful number, since it uses less digits than its factorization.

28650554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349440.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 28650554 is about 5352.6212270251. The cubic root of 28650554 is about 305.9926593423.

The spelling of 28650554 in words is "twenty-eight million, six hundred fifty thousand, five hundred fifty-four".

Divisors: 1 2 41 82 349397 698794 14325277 28650554