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30700271 = 7672977
BaseRepresentation
bin111010100011…
…1001011101111
32010202201212002
41311013023233
530324402041
63014002515
7521643110
oct165071357
963681762
1030700271
1116369628
12a34643b
13648b954
144112207
152a6659b
hex1d472ef

30700271 has 12 divisors (see below), whose sum is σ = 35653968. Its totient is φ = 25895232.

The previous prime is 30700231. The next prime is 30700279. The reversal of 30700271 is 17200703.

It is not a de Polignac number, because 30700271 - 210 = 30699247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30700279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30935 + ... + 31911.

It is an arithmetic number, because the mean of its divisors is an integer number (2971164).

Almost surely, 230700271 is an apocalyptic number.

30700271 is a deficient number, since it is larger than the sum of its proper divisors (4953697).

30700271 is an frugal number, since it uses more digits than its factorization.

30700271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 30700271 is about 5540.7825259615. The cubic root of 30700271 is about 313.1223514291.

Adding to 30700271 its reverse (17200703), we get a palindrome (47900974).

The spelling of 30700271 in words is "thirty million, seven hundred thousand, two hundred seventy-one".

Divisors: 1 7 67 469 977 4489 6839 31423 65459 458213 4385753 30700271