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30253580 = 2257230871
BaseRepresentation
bin111001101101…
…0001000001100
32002221001002222
41303122020030
530221103310
63000234512
7515102600
oct163321014
962831088
1030253580
1116093a65
12a16ba38
136363536
144037500
1529c9055
hex1cda20c

30253580 has 36 divisors (see below), whose sum is σ = 73907568. Its totient is φ = 10372320.

The previous prime is 30253577. The next prime is 30253631. The reversal of 30253580 is 8535203.

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 11 ways as a sum of consecutive naturals, for example, 14456 + ... + 16415.

It is an arithmetic number, because the mean of its divisors is an integer number (2052988).

Almost surely, 230253580 is an apocalyptic number.

It is an amenable number.

30253580 is an abundant number, since it is smaller than the sum of its proper divisors (43653988).

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

30253580 is a wasteful number, since it uses less digits than its factorization.

30253580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30894 (or 30885 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 30253580 is about 5500.3254449169. The cubic root of 30253580 is about 311.5962754214.

Adding to 30253580 its reverse (8535203), we get a palindrome (38788783).

The spelling of 30253580 in words is "thirty million, two hundred fifty-three thousand, five hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 30871 61742 123484 154355 216097 308710 432194 617420 864388 1080485 1512679 2160970 3025358 4321940 6050716 7563395 15126790 30253580