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30180260 = 22511137183
BaseRepresentation
bin111001100100…
…0001110100100
32002210022112102
41303020032210
530211232020
62554511232
7514346045
oct163101644
962708472
1030180260
1116043970
12a135518
136339056
1440188cc
1529b2475
hex1cc83a4

30180260 has 24 divisors (see below), whose sum is σ = 69140736. Its totient is φ = 10974560.

The previous prime is 30180259. The next prime is 30180277. The reversal of 30180260 is 6208103.

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 7 ways as a sum of consecutive naturals, for example, 68372 + ... + 68811.

It is an arithmetic number, because the mean of its divisors is an integer number (2880864).

Almost surely, 230180260 is an apocalyptic number.

It is an amenable number.

30180260 is an abundant number, since it is smaller than the sum of its proper divisors (38960476).

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

30180260 is a wasteful number, since it uses less digits than its factorization.

30180260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137203 (or 137201 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30180260 is about 5493.6563416362. The cubic root of 30180260 is about 311.3443523997.

Adding to 30180260 its reverse (6208103), we get a palindrome (36388363).

The spelling of 30180260 in words is "thirty million, one hundred eighty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 137183 274366 548732 685915 1371830 1509013 2743660 3018026 6036052 7545065 15090130 30180260