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30245530 = 2571922741
BaseRepresentation
bin111001101100…
…0001010011010
32002220122001211
41303120022122
530220324110
63000133334
7515040250
oct163301232
962818054
1030245530
1116088a07
12a16724a
13635c983
1440345d0
1529c698a
hex1cd829a

30245530 has 32 divisors (see below), whose sum is σ = 65496960. Its totient is φ = 9823680.

The previous prime is 30245519. The next prime is 30245531. The reversal of 30245530 is 3554203.

It is not an unprimeable number, because it can be changed into a prime (30245531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10041 + ... + 12700.

It is an arithmetic number, because the mean of its divisors is an integer number (2046780).

Almost surely, 230245530 is an apocalyptic number.

30245530 is an abundant number, since it is smaller than the sum of its proper divisors (35251430).

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

30245530 is a wasteful number, since it uses less digits than its factorization.

30245530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22774.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 30245530 is about 5499.5936213506. The cubic root of 30245530 is about 311.5686360199.

Adding to 30245530 its reverse (3554203), we get a palindrome (33799733).

The spelling of 30245530 in words is "thirty million, two hundred forty-five thousand, five hundred thirty".

Divisors: 1 2 5 7 10 14 19 35 38 70 95 133 190 266 665 1330 22741 45482 113705 159187 227410 318374 432079 795935 864158 1591870 2160395 3024553 4320790 6049106 15122765 30245530