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28952361 = 326435003
BaseRepresentation
bin110111001110…
…0011100101001
32000110221011200
41232130130221
524402433421
62512314413
7501043134
oct156343451
960427150
1028952361
1115385379
129842a09
135cc9199
143bb921b
15281d726
hex1b9c729

28952361 has 12 divisors (see below), whose sum is σ = 41893488. Its totient is φ = 19267704.

The previous prime is 28952351. The next prime is 28952387. The reversal of 28952361 is 16325982.

It is not a de Polignac number, because 28952361 - 29 = 28951849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28952351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3286 + ... + 8288.

It is an arithmetic number, because the mean of its divisors is an integer number (3491124).

Almost surely, 228952361 is an apocalyptic number.

It is an amenable number.

28952361 is a deficient number, since it is larger than the sum of its proper divisors (12941127).

28952361 is a wasteful number, since it uses less digits than its factorization.

28952361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652 (or 5649 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28952361 is about 5380.7398190212. The cubic root of 28952361 is about 307.0633580644.

It can be divided in two parts, 289 and 52361, that added together give a triangular number (52650 = T324).

The spelling of 28952361 in words is "twenty-eight million, nine hundred fifty-two thousand, three hundred sixty-one".

Divisors: 1 3 9 643 1929 5003 5787 15009 45027 3216929 9650787 28952361