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30245018 = 2131241479
BaseRepresentation
bin111001101100…
…0000010011010
32002220121100212
41303120002122
530220320033
63000131122
7515035616
oct163300232
962817325
1030245018
1116088591
12a166aa2
13635c67b
144034346
1529c6748
hex1cd809a

30245018 has 16 divisors (see below), whose sum is σ = 45999360. Its totient is φ = 14913600.

The previous prime is 30245011. The next prime is 30245027. The reversal of 30245018 is 81054203.

It is a super-2 number, since 2×302450182 = 1829522227640648, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30244984 and 30245002.

It is not an unprimeable number, because it can be changed into a prime (30245011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 62903 + ... + 63381.

It is an arithmetic number, because the mean of its divisors is an integer number (2874960).

Almost surely, 230245018 is an apocalyptic number.

30245018 is a deficient number, since it is larger than the sum of its proper divisors (15754342).

30245018 is a wasteful number, since it uses less digits than its factorization.

30245018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 30245018 is about 5499.5470722597. The cubic root of 30245018 is about 311.5668779195.

The spelling of 30245018 in words is "thirty million, two hundred forty-five thousand, eighteen".

Divisors: 1 2 131 241 262 479 482 958 31571 62749 63142 115439 125498 230878 15122509 30245018