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3061728 = 253210631
BaseRepresentation
bin1011101011011111100000
312202112220100
423223133200
51240433403
6145342400
735011215
oct13533740
95675810
103061728
11180135a
121037a00
13832797
14599b0c
154072a3
hex2eb7e0

3061728 has 36 divisors (see below), whose sum is σ = 8707608. Its totient is φ = 1020480.

The previous prime is 3061703. The next prime is 3061739. The reversal of 3061728 is 8271603.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5028 + ... + 5603.

It is an arithmetic number, because the mean of its divisors is an integer number (241878).

Almost surely, 23061728 is an apocalyptic number.

It is an amenable number.

3061728 is an abundant number, since it is smaller than the sum of its proper divisors (5645880).

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

3061728 is a wasteful number, since it uses less digits than its factorization.

3061728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10647 (or 10636 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 3061728 is about 1749.7794146692. The cubic root of 3061728 is about 145.2074399120.

The spelling of 3061728 in words is "three million, sixty-one thousand, seven hundred twenty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 10631 21262 31893 42524 63786 85048 95679 127572 170096 191358 255144 340192 382716 510288 765432 1020576 1530864 3061728