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30055974 = 2313229641
BaseRepresentation
bin111001010100…
…1111000100110
32002120000001020
41302221320212
530143242344
62552112010
7513320514
oct162517046
962500036
1030055974
1115a69553
12a095606
1362c4600
143dc54b4
15298a719
hex1ca9e26

30055974 has 24 divisors (see below), whose sum is σ = 65093832. Its totient is φ = 9247680.

The previous prime is 30055943. The next prime is 30055997. The reversal of 30055974 is 47955003.

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 11 ways as a sum of consecutive naturals, for example, 13807 + ... + 15834.

It is an arithmetic number, because the mean of its divisors is an integer number (2712243).

Almost surely, 230055974 is an apocalyptic number.

30055974 is an abundant number, since it is smaller than the sum of its proper divisors (35037858).

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

30055974 is a wasteful number, since it uses less digits than its factorization.

30055974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29672 (or 29659 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 30055974 is about 5482.3328975902. The cubic root of 30055974 is about 310.9163796787.

The spelling of 30055974 in words is "thirty million, fifty-five thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 13 26 39 78 169 338 507 1014 29641 59282 88923 177846 385333 770666 1155999 2311998 5009329 10018658 15027987 30055974