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30144274 = 2148110177
BaseRepresentation
bin111001011111…
…1011100010010
32002201111011121
41302333130102
530204104044
62554032454
7514136116
oct162773422
962644147
1030144274
1116019926
12a11872a
136325864
144009746
1529a6984
hex1cbf712

30144274 has 8 divisors (see below), whose sum is σ = 45251388. Its totient is φ = 15060480.

The previous prime is 30144269. The next prime is 30144293. The reversal of 30144274 is 47244103.

It can be written as a sum of positive squares in 2 ways, for example, as 30085225 + 59049 = 5485^2 + 243^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127 + ... + 8050.

Almost surely, 230144274 is an apocalyptic number.

30144274 is a deficient number, since it is larger than the sum of its proper divisors (15107114).

30144274 is a wasteful number, since it uses less digits than its factorization.

30144274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11660.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 30144274 is about 5490.3801325591. The cubic root of 30144274 is about 311.2205574210.

Adding to 30144274 its reverse (47244103), we get a palindrome (77388377).

The spelling of 30144274 in words is "thirty million, one hundred forty-four thousand, two hundred seventy-four".

Divisors: 1 2 1481 2962 10177 20354 15072137 30144274