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30151426 = 215075713
BaseRepresentation
bin111001100000…
…1001100000010
32002201211222111
41303001030002
530204321201
62554125534
7514166014
oct163011402
962654874
1030151426
1116024238
12a1208aa
136328ba6
14400c1b4
1529a8b51
hex1cc1302

30151426 has 4 divisors (see below), whose sum is σ = 45227142. Its totient is φ = 15075712.

The previous prime is 30151399. The next prime is 30151439. The reversal of 30151426 is 62415103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62415103 = 617101159.

It can be written as a sum of positive squares in only one way, i.e., 29430625 + 720801 = 5425^2 + 849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30151397 and 30151406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7537855 + ... + 7537858.

Almost surely, 230151426 is an apocalyptic number.

30151426 is a deficient number, since it is larger than the sum of its proper divisors (15075716).

30151426 is a wasteful number, since it uses less digits than its factorization.

30151426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15075715.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 30151426 is about 5491.0314149529. The cubic root of 30151426 is about 311.2451687664.

Adding to 30151426 its reverse (62415103), we get a palindrome (92566529).

The spelling of 30151426 in words is "thirty million, one hundred fifty-one thousand, four hundred twenty-six".

Divisors: 1 2 15075713 30151426