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30770982 = 2331151803
BaseRepresentation
bin111010101100…
…0011100100110
32010220022212000
41311120130212
530334132412
63015310130
7522356214
oct165303446
963808760
1030770982
1116407770
12a37b346
1364b4ba8
14412dcb4
152a7c4dc
hex1d58726

30770982 has 32 divisors (see below), whose sum is σ = 74597760. Its totient is φ = 9324360.

The previous prime is 30770933. The next prime is 30770989. The reversal of 30770982 is 28907703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30770989) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25308 + ... + 26495.

It is an arithmetic number, because the mean of its divisors is an integer number (2331180).

Almost surely, 230770982 is an apocalyptic number.

30770982 is an abundant number, since it is smaller than the sum of its proper divisors (43826778).

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

30770982 is a wasteful number, since it uses less digits than its factorization.

30770982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51825 (or 51819 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 30770982 is about 5547.1598138146. The cubic root of 30770982 is about 313.3625688228.

It can be divided in two parts, 307 and 70982, that added together give a square (71289 = 2672).

The spelling of 30770982 in words is "thirty million, seven hundred seventy thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 9 11 18 22 27 33 54 66 99 198 297 594 51803 103606 155409 310818 466227 569833 932454 1139666 1398681 1709499 2797362 3418998 5128497 10256994 15385491 30770982