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30555146 = 279193387
BaseRepresentation
bin111010010001…
…1110000001010
32010111100210002
41310203300022
530310231041
63010523002
7520500026
oct164436012
963440702
1030555146
111627a596
12a296462
13643a88b
1440b5386
152a3859b
hex1d23c0a

30555146 has 8 divisors (see below), whose sum is σ = 46413120. Its totient is φ = 15084108.

The previous prime is 30555131. The next prime is 30555167. The reversal of 30555146 is 64155503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96536 + ... + 96851.

It is an arithmetic number, because the mean of its divisors is an integer number (5801640).

Almost surely, 230555146 is an apocalyptic number.

30555146 is a deficient number, since it is larger than the sum of its proper divisors (15857974).

30555146 is a wasteful number, since it uses less digits than its factorization.

30555146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193468.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 30555146 is about 5527.6709381077. The cubic root of 30555146 is about 312.6281790972.

The spelling of 30555146 in words is "thirty million, five hundred fifty-five thousand, one hundred forty-six".

Divisors: 1 2 79 158 193387 386774 15277573 30555146