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30080655 = 3251167907
BaseRepresentation
bin111001010111…
…1111010001111
32002121020220100
41302233322033
530200040110
62552422143
7513452463
oct162577217
962536810
1030080655
1115a86050
12a0a7953
136302907
143dd04a3
152992bc0
hex1cafe8f

30080655 has 48 divisors (see below), whose sum is σ = 57792384. Its totient is φ = 14351040.

The previous prime is 30080623. The next prime is 30080657. The reversal of 30080655 is 55608003.

30080655 is a `hidden beast` number, since 3 + 0 + 0 + 8 + 0 + 655 = 666.

It is not a de Polignac number, because 30080655 - 25 = 30080623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30080657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32712 + ... + 33618.

It is an arithmetic number, because the mean of its divisors is an integer number (1204008).

Almost surely, 230080655 is an apocalyptic number.

30080655 is a deficient number, since it is larger than the sum of its proper divisors (27711729).

30080655 is a wasteful number, since it uses less digits than its factorization.

30080655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 30080655 is about 5484.5833934767. The cubic root of 30080655 is about 311.0014612408.

Adding to 30080655 its reverse (55608003), we get a palindrome (85688658).

The spelling of 30080655 in words is "thirty million, eighty thousand, six hundred fifty-five".

Divisors: 1 3 5 9 11 15 33 45 55 67 99 165 201 335 495 603 737 907 1005 2211 2721 3015 3685 4535 6633 8163 9977 11055 13605 29931 33165 40815 49885 60769 89793 149655 182307 303845 448965 546921 668459 911535 2005377 2734605 3342295 6016131 10026885 30080655