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33025013 = 731152189
BaseRepresentation
bin111110111111…
…0101111110101
32022010211210122
41331332233311
531423300023
63135501325
7550464560
oct175765765
968124718
1033025013
11177071aa
12b087845
136ac3b38
1445594d7
152d752c8
hex1f7ebf5

33025013 has 8 divisors (see below), whose sum is σ = 38960640. Its totient is φ = 27393840.

The previous prime is 33025007. The next prime is 33025019. The reversal of 33025013 is 31052033.

It is an interprime number because it is at equal distance from previous prime (33025007) and next prime (33025019).

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

It is a cyclic number.

It is not a de Polignac number, because 33025013 - 216 = 32959477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33024982 and 33025000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33025019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75878 + ... + 76311.

It is an arithmetic number, because the mean of its divisors is an integer number (4870080).

Almost surely, 233025013 is an apocalyptic number.

It is an amenable number.

33025013 is a deficient number, since it is larger than the sum of its proper divisors (5935627).

33025013 is a wasteful number, since it uses less digits than its factorization.

33025013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152227.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 33025013 is about 5746.7393363541. The cubic root of 33025013 is about 320.8344529936.

Adding to 33025013 its reverse (31052033), we get a palindrome (64077046).

The spelling of 33025013 in words is "thirty-three million, twenty-five thousand, thirteen".

Divisors: 1 7 31 217 152189 1065323 4717859 33025013