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30208132 = 2237401509
BaseRepresentation
bin111001100111…
…1000010000100
32002211201202201
41303033002010
530213130012
62555244244
7514523233
oct163170204
962751681
1030208132
11160628a9
12a149684
136348946
144024b1a
1529ba857
hex1ccf084

30208132 has 24 divisors (see below), whose sum is σ = 54535320. Its totient is φ = 14630400.

The previous prime is 30208121. The next prime is 30208141. The reversal of 30208132 is 23180203.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24760576 + 5447556 = 4976^2 + 2334^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59094 + ... + 59602.

It is an arithmetic number, because the mean of its divisors is an integer number (2272305).

Almost surely, 230208132 is an apocalyptic number.

It is an amenable number.

30208132 is a deficient number, since it is larger than the sum of its proper divisors (24327188).

30208132 is a wasteful number, since it uses less digits than its factorization.

30208132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30208132 is about 5496.1925002678. The cubic root of 30208132 is about 311.4401669023.

Adding to 30208132 its reverse (23180203), we get a palindrome (53388335).

The spelling of 30208132 in words is "thirty million, two hundred eight thousand, one hundred thirty-two".

Divisors: 1 2 4 37 74 148 401 509 802 1018 1604 2036 14837 18833 29674 37666 59348 75332 204109 408218 816436 7552033 15104066 30208132