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30075418 = 2138110889
BaseRepresentation
bin111001010111…
…0101000011010
32002120222201101
41302232220122
530144403133
62552342014
7513431302
oct162565032
962528641
1030075418
1115a8211a
12a0a490a
136300409
143dcc602
15299137d
hex1caea1a

30075418 has 8 divisors (see below), whose sum is σ = 45149940. Its totient is φ = 15025440.

The previous prime is 30075403. The next prime is 30075439. The reversal of 30075418 is 81457003.

It can be written as a sum of positive squares in 2 ways, for example, as 26967249 + 3108169 = 5193^2 + 1763^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2683 + ... + 8206.

Almost surely, 230075418 is an apocalyptic number.

30075418 is a deficient number, since it is larger than the sum of its proper divisors (15074522).

30075418 is a wasteful number, since it uses less digits than its factorization.

30075418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12272.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30075418 is about 5484.1059435427. The cubic root of 30075418 is about 310.9834118867.

The spelling of 30075418 in words is "thirty million, seventy-five thousand, four hundred eighteen".

Divisors: 1 2 1381 2762 10889 21778 15037709 30075418