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30334261 = 294612269
BaseRepresentation
bin111001110110…
…1110100110101
32010002010210011
41303231310311
530231144021
63002100221
7515560036
oct163556465
963063704
1030334261
1116139641
12a1aa671
136391189
144058a8d
1529e2de1
hex1cedd35

30334261 has 8 divisors (see below), whose sum is σ = 31462200. Its totient is φ = 29211840.

The previous prime is 30334247. The next prime is 30334321. The reversal of 30334261 is 16243303.

30334261 = 38942 + 38952.

It can be written as a sum of positive squares in 4 ways, for example, as 18225 + 30316036 = 135^2 + 5506^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30334261 - 27 = 30334133 is a prime.

It is a super-2 number, since 2×303342612 = 1840334780832242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30334961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12235 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (3932775).

Almost surely, 230334261 is an apocalyptic number.

30334261 is the 3895-th centered square number.

It is an amenable number.

30334261 is a deficient number, since it is larger than the sum of its proper divisors (1127939).

30334261 is a wasteful number, since it uses less digits than its factorization.

30334261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 30334261 is about 5507.6547640534. The cubic root of 30334261 is about 311.8730204572.

Adding to 30334261 its reverse (16243303), we get a palindrome (46577564).

The spelling of 30334261 in words is "thirty million, three hundred thirty-four thousand, two hundred sixty-one".

Divisors: 1 29 461 2269 13369 65801 1046009 30334261