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30143174 = 217387119
BaseRepresentation
bin111001011111…
…1001011000110
32002201102122212
41302333023012
530204040144
62554023422
7514132655
oct162771306
962642585
1030143174
1116019016
12a117b72
1363251c9
14400919c
1529a649e
hex1cbf2c6

30143174 has 8 divisors (see below), whose sum is σ = 45476640. Its totient is φ = 14984296.

The previous prime is 30143173. The next prime is 30143189. The reversal of 30143174 is 47134103.

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

It is a super-2 number, since 2×301431742 = 1817221877588552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30143173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43214 + ... + 43905.

It is an arithmetic number, because the mean of its divisors is an integer number (5684580).

Almost surely, 230143174 is an apocalyptic number.

30143174 is a deficient number, since it is larger than the sum of its proper divisors (15333466).

30143174 is a wasteful number, since it uses less digits than its factorization.

30143174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87294.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 30143174 is about 5490.2799564321. The cubic root of 30143174 is about 311.2167717736.

Adding to 30143174 its reverse (47134103), we get a palindrome (77277277).

The spelling of 30143174 in words is "thirty million, one hundred forty-three thousand, one hundred seventy-four".

Divisors: 1 2 173 346 87119 174238 15071587 30143174