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30748484 = 2213591317
BaseRepresentation
bin111010101001…
…0111101000100
32010212011222202
41311102331010
530332422414
63015014032
7522233504
oct165227504
963764882
1030748484
11163a1878
12a36a318
1364a7890
144125a04
152a759de
hex1d52f44

30748484 has 12 divisors (see below), whose sum is σ = 57949164. Its totient is φ = 14191584.

The previous prime is 30748469. The next prime is 30748489. The reversal of 30748484 is 48484703.

It can be written as a sum of positive squares in 2 ways, for example, as 15366400 + 15382084 = 3920^2 + 3922^2 .

It is not an unprimeable number, because it can be changed into a prime (30748489) 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, 295607 + ... + 295710.

It is an arithmetic number, because the mean of its divisors is an integer number (4829097).

Almost surely, 230748484 is an apocalyptic number.

It is an amenable number.

30748484 is a deficient number, since it is larger than the sum of its proper divisors (27200680).

30748484 is a wasteful number, since it uses less digits than its factorization.

30748484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591334 (or 591332 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 30748484 is about 5545.1315584033. The cubic root of 30748484 is about 313.2861792126.

The spelling of 30748484 in words is "thirty million, seven hundred forty-eight thousand, four hundred eighty-four".

Divisors: 1 2 4 13 26 52 591317 1182634 2365268 7687121 15374242 30748484