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33684940 = 2251684247
BaseRepresentation
bin1000000001111…
…1110111001100
32100101101001101
42000133313030
532110404230
63201552444
7556213552
oct200376714
970341041
1033684940
1118017aa3
12b345724
136c95323
14468bbd2
152e55aca
hex201fdcc

33684940 has 12 divisors (see below), whose sum is σ = 70738416. Its totient is φ = 13473968.

The previous prime is 33684923. The next prime is 33684943. The reversal of 33684940 is 4948633.

33684940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×336849402 = 2269350365607200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33684940.

It is not an unprimeable number, because it can be changed into a prime (33684943) 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, 842104 + ... + 842143.

It is an arithmetic number, because the mean of its divisors is an integer number (5894868).

Almost surely, 233684940 is an apocalyptic number.

It is an amenable number.

33684940 is an abundant number, since it is smaller than the sum of its proper divisors (37053476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33684940 is a wasteful number, since it uses less digits than its factorization.

33684940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684256 (or 1684254 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 33684940 is about 5803.8728449200. The cubic root of 33684940 is about 322.9574143423.

The spelling of 33684940 in words is "thirty-three million, six hundred eighty-four thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 1684247 3368494 6736988 8421235 16842470 33684940