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30958525 = 521395257
BaseRepresentation
bin111011000011…
…0001110111101
32011020212010001
41312012032331
530411133100
63023314301
7524100043
oct166061675
964225101
1030958525
1116525664
12a44b991
13654c370
14417c393
152ab7d6a
hex1d863bd

30958525 has 12 divisors (see below), whose sum is σ = 41341972. Its totient is φ = 22861440.

The previous prime is 30958511. The next prime is 30958531. The reversal of 30958525 is 52585903.

It can be written as a sum of positive squares in 6 ways, for example, as 9972964 + 20985561 = 3158^2 + 4581^2 .

It is not a de Polignac number, because 30958525 - 25 = 30958493 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47304 + ... + 47953.

Almost surely, 230958525 is an apocalyptic number.

It is an amenable number.

30958525 is a deficient number, since it is larger than the sum of its proper divisors (10383447).

30958525 is a wasteful number, since it uses less digits than its factorization.

30958525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95280 (or 95275 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 30958525 is about 5564.0385512683. The cubic root of 30958525 is about 313.9979072710.

The spelling of 30958525 in words is "thirty million, nine hundred fifty-eight thousand, five hundred twenty-five".

Divisors: 1 5 13 25 65 325 95257 476285 1238341 2381425 6191705 30958525