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30270080 = 27547297
BaseRepresentation
bin111001101111…
…0001010000000
32002221212202002
41303132022000
530222120310
63000443132
7515201651
oct163361200
962855662
1030270080
11160a53a5
12a1794a8
13636abb9
14403d528
1529cdda5
hex1cde280

30270080 has 32 divisors (see below), whose sum is σ = 72365940. Its totient is φ = 12107776.

The previous prime is 30270041. The next prime is 30270109. The reversal of 30270080 is 8007203.

It can be written as a sum of positive squares in 2 ways, for example, as 29333056 + 937024 = 5416^2 + 968^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (20).

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 3 ways as a sum of consecutive naturals, for example, 23009 + ... + 24288.

Almost surely, 230270080 is an apocalyptic number.

It is an amenable number.

30270080 is an abundant number, since it is smaller than the sum of its proper divisors (42095860).

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

30270080 is an equidigital number, since it uses as much as digits as its factorization.

30270080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47316 (or 47304 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 30270080 is about 5501.8251517110. The cubic root of 30270080 is about 311.6529122905.

Adding to 30270080 its reverse (8007203), we get a palindrome (38277283).

The spelling of 30270080 in words is "thirty million, two hundred seventy thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 47297 94594 189188 236485 378376 472970 756752 945940 1513504 1891880 3027008 3783760 6054016 7567520 15135040 30270080