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30199248 = 2432209717
BaseRepresentation
bin111001100110…
…0110111010000
32002211021120200
41303030313100
530212333443
62555135200
7514455312
oct163146720
962737520
1030199248
1116057162
12a144500
1363448a1
1440217b2
1529b7dd3
hex1cccdd0

30199248 has 30 divisors (see below), whose sum is σ = 84516354. Its totient is φ = 10066368.

The previous prime is 30199223. The next prime is 30199271. The reversal of 30199248 is 84299103.

It can be written as a sum of positive squares in only one way, i.e., 24088464 + 6110784 = 4908^2 + 2472^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 104715 + ... + 105002.

Almost surely, 230199248 is an apocalyptic number.

It is an amenable number.

30199248 is an abundant number, since it is smaller than the sum of its proper divisors (54317106).

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

30199248 is a wasteful number, since it uses less digits than its factorization.

30199248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209731 (or 209722 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 30199248 is about 5495.3842449823. The cubic root of 30199248 is about 311.4096331184.

The spelling of 30199248 in words is "thirty million, one hundred ninety-nine thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 209717 419434 629151 838868 1258302 1677736 1887453 2516604 3355472 3774906 5033208 7549812 10066416 15099624 30199248