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30182941 = 101298841
BaseRepresentation
bin111001100100…
…0111000011101
32002210110012201
41303020320131
530211323231
62554531501
7514356625
oct163107035
962713181
1030182941
1116045988
12a136b91
13633a339
144019885
1529b3161
hex1cc8e1d

30182941 has 4 divisors (see below), whose sum is σ = 30481884. Its totient is φ = 29884000.

The previous prime is 30182921. The next prime is 30182951. The reversal of 30182941 is 14928103.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22838841 + 7344100 = 4779^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 30182941 - 27 = 30182813 is a prime.

It is a super-2 number, since 2×301829412 = 1822019854818962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30182921) 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 3 ways as a sum of consecutive naturals, for example, 149320 + ... + 149521.

It is an arithmetic number, because the mean of its divisors is an integer number (7620471).

Almost surely, 230182941 is an apocalyptic number.

It is an amenable number.

30182941 is a deficient number, since it is larger than the sum of its proper divisors (298943).

30182941 is a wasteful number, since it uses less digits than its factorization.

30182941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298942.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 30182941 is about 5493.9003449280. The cubic root of 30182941 is about 311.3535713339.

The spelling of 30182941 in words is "thirty million, one hundred eighty-two thousand, nine hundred forty-one".

Divisors: 1 101 298841 30182941