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13783028 = 227492251
BaseRepresentation
bin110100100100…
…111111110100
3221221020202112
4310210333310
512012024103
61211230152
7225103520
oct64447764
927836675
1013783028
117864436
124748358
132b1774c
141b8ad80
151323cd8
hexd24ff4

13783028 has 12 divisors (see below), whose sum is σ = 27566112. Its totient is φ = 5907000.

The previous prime is 13783027. The next prime is 13783061. The reversal of 13783028 is 82038731.

13783028 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13782985 and 13783003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13783027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246098 + ... + 246153.

It is an arithmetic number, because the mean of its divisors is an integer number (2297176).

Almost surely, 213783028 is an apocalyptic number.

It is an amenable number.

13783028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13783028 is a wasteful number, since it uses less digits than its factorization.

13783028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492262 (or 492260 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 13783028 is about 3712.5500670025. The cubic root of 13783028 is about 239.7626588842.

The spelling of 13783028 in words is "thirteen million, seven hundred eighty-three thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 492251 984502 1969004 3445757 6891514 13783028