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3781028 = 223972381
BaseRepresentation
bin1110011011000110100100
321010002121002
432123012210
51431443103
6213012432
744065256
oct16330644
97102532
103781028
112152819
121324118
13a24cc4
14705cd6
154ea488
hex39b1a4

3781028 has 12 divisors (see below), whose sum is σ = 6636252. Its totient is φ = 1884960.

The previous prime is 3781007. The next prime is 3781079. The reversal of 3781028 is 8201873.

3781028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 850084 + 2930944 = 922^2 + 1712^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398 + ... + 2778.

It is an arithmetic number, because the mean of its divisors is an integer number (553021).

Almost surely, 23781028 is an apocalyptic number.

It is an amenable number.

3781028 is a deficient number, since it is larger than the sum of its proper divisors (2855224).

3781028 is a wasteful number, since it uses less digits than its factorization.

3781028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 3781028 is about 1944.4865646232. The cubic root of 3781028 is about 155.7889431617.

The spelling of 3781028 in words is "three million, seven hundred eighty-one thousand, twenty-eight".

Divisors: 1 2 4 397 794 1588 2381 4762 9524 945257 1890514 3781028