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30748482 = 23213072
BaseRepresentation
bin111010101001…
…0111101000010
32010212011222200
41311102331002
530332422412
63015014030
7522233502
oct165227502
963764880
1030748482
11163a1876
12a36a316
1364a788b
144125a02
152a759dc
hex1d52f42

30748482 has 18 divisors (see below), whose sum is σ = 66672723. Its totient is φ = 10241652.

The previous prime is 30748469. The next prime is 30748489. The reversal of 30748482 is 28484703.

It can be written as a sum of positive squares in only one way, i.e., 15374241 + 15374241 = 3921^2 + 3921^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅BA, here for A=2, B=3921.

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 8 ways as a sum of consecutive naturals, for example, 22873 + ... + 24179.

Almost surely, 230748482 is an apocalyptic number.

30748482 is an abundant number, since it is smaller than the sum of its proper divisors (35924241).

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

30748482 is an equidigital number, since it uses as much as digits as its factorization.

30748482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 30748482 is about 5545.1313780649. The cubic root of 30748482 is about 313.2861724201.

The spelling of 30748482 in words is "thirty million, seven hundred forty-eight thousand, four hundred eighty-two".

Divisors: 1 2 3 6 9 18 1307 2614 3921 7842 11763 23526 1708249 3416498 5124747 10249494 15374241 30748482