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30989325 = 3521014091
BaseRepresentation
bin111011000110…
…1110000001101
32011022102100210
41312031300031
530413124300
63024113033
7524255613
oct166156015
964272323
1030989325
1116546814
12a465779
1365603a3
1441896b3
152ac2050
hex1d8dc0d

30989325 has 24 divisors (see below), whose sum is σ = 51755616. Its totient is φ = 16360000.

The previous prime is 30989311. The next prime is 30989333. The reversal of 30989325 is 52398903.

It is not a de Polignac number, because 30989325 - 25 = 30989293 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5530 + ... + 9620.

It is an arithmetic number, because the mean of its divisors is an integer number (2156484).

Almost surely, 230989325 is an apocalyptic number.

It is an amenable number.

30989325 is a deficient number, since it is larger than the sum of its proper divisors (20766291).

30989325 is a wasteful number, since it uses less digits than its factorization.

30989325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205 (or 4200 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 30989325 is about 5566.8056369879. The cubic root of 30989325 is about 314.1020027785.

The spelling of 30989325 in words is "thirty million, nine hundred eighty-nine thousand, three hundred twenty-five".

Divisors: 1 3 5 15 25 75 101 303 505 1515 2525 4091 7575 12273 20455 61365 102275 306825 413191 1239573 2065955 6197865 10329775 30989325