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30344148 = 22321495657
BaseRepresentation
bin111001111000…
…0001111010100
32010002122100100
41303300033110
530232003043
63002214100
7515630622
oct163601724
963078310
1030344148
111614600a
12a1b4330
136395823
14405c512
1529e5cd3
hex1cf03d4

30344148 has 36 divisors (see below), whose sum is σ = 77231700. Its totient is φ = 10045056.

The previous prime is 30344147. The next prime is 30344161. The reversal of 30344148 is 84144303.

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 27060804 = 1812^2 + 5202^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30344147) 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 11 ways as a sum of consecutive naturals, for example, 2536 + ... + 8192.

It is an arithmetic number, because the mean of its divisors is an integer number (2145325).

Almost surely, 230344148 is an apocalyptic number.

It is an amenable number.

30344148 is an abundant number, since it is smaller than the sum of its proper divisors (46887552).

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

30344148 is a wasteful number, since it uses less digits than its factorization.

30344148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 30344148 is about 5508.5522598955. The cubic root of 30344148 is about 311.9069002300.

The spelling of 30344148 in words is "thirty million, three hundred forty-four thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 149 298 447 596 894 1341 1788 2682 5364 5657 11314 16971 22628 33942 50913 67884 101826 203652 842893 1685786 2528679 3371572 5057358 7586037 10114716 15172074 30344148