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30143154 = 235023859
BaseRepresentation
bin111001011111…
…1001010110010
32002201102122010
41302333022302
530204040104
62554023350
7514132626
oct162771262
962642563
1030143154
1116018aa8
12a117b56
1363251b2
144009186
1529a6489
hex1cbf2b2

30143154 has 8 divisors (see below), whose sum is σ = 60286320. Its totient is φ = 10047716.

The previous prime is 30143153. The next prime is 30143173. The reversal of 30143154 is 45134103.

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

30143154 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30143154.

It is not an unprimeable number, because it can be changed into a prime (30143153) 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, 2511924 + ... + 2511935.

It is an arithmetic number, because the mean of its divisors is an integer number (7535790).

Almost surely, 230143154 is an apocalyptic number.

30143154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30143154 is a wasteful number, since it uses less digits than its factorization.

30143154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5023864.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30143154 is about 5490.2781350310. The cubic root of 30143154 is about 311.2167029428.

Adding to 30143154 its reverse (45134103), we get a palindrome (75277257).

The spelling of 30143154 in words is "thirty million, one hundred forty-three thousand, one hundred fifty-four".

Divisors: 1 2 3 6 5023859 10047718 15071577 30143154