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33838028 = 2272172643
BaseRepresentation
bin1000000100010…
…1001111001100
32100200011001022
42001011033030
532130304103
63205133312
7560422100
oct201051714
970604038
1033838028
1118112014
12b3ba238
137019c03
1446cb900
152e86138
hex20453cc

33838028 has 18 divisors (see below), whose sum is σ = 68884956. Its totient is φ = 14501928.

The previous prime is 33837977. The next prime is 33838039. The reversal of 33838028 is 82083833.

It is a super-2 number, since 2×338380282 = 2290024277857568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86126 + ... + 86517.

It is an arithmetic number, because the mean of its divisors is an integer number (3826942).

Almost surely, 233838028 is an apocalyptic number.

It is an amenable number.

33838028 is an abundant number, since it is smaller than the sum of its proper divisors (35046928).

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

33838028 is a wasteful number, since it uses less digits than its factorization.

33838028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172661 (or 172652 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 33838028 is about 5817.0463295387. The cubic root of 33838028 is about 323.4459234023.

It can be divided in two parts, 3383 and 8028, that added together give a palindrome (11411).

The spelling of 33838028 in words is "thirty-three million, eight hundred thirty-eight thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 49 98 196 172643 345286 690572 1208501 2417002 4834004 8459507 16919014 33838028