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30194260 = 2257320681
BaseRepresentation
bin111001100101…
…1101001010100
32002211000201221
41303023221110
530212204020
62555100124
7514434625
oct163135124
962730657
1030194260
1116053438
12a141644
136342535
14401da4c
1529b66aa
hex1ccba54

30194260 has 24 divisors (see below), whose sum is σ = 64279656. Its totient is φ = 11911680.

The previous prime is 30194251. The next prime is 30194267. The reversal of 30194260 is 6249103.

It can be written as a sum of positive squares in 4 ways, for example, as 404496 + 29789764 = 636^2 + 5458^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30194267) 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 7 ways as a sum of consecutive naturals, for example, 8881 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (2678319).

Almost surely, 230194260 is an apocalyptic number.

It is an amenable number.

30194260 is an abundant number, since it is smaller than the sum of its proper divisors (34085396).

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

30194260 is a wasteful number, since it uses less digits than its factorization.

30194260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20763 (or 20761 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30194260 is about 5494.9303908239. The cubic root of 30194260 is about 311.3924870316.

The spelling of 30194260 in words is "thirty million, one hundred ninety-four thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 20681 41362 82724 103405 206810 413620 1509713 3019426 6038852 7548565 15097130 30194260