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30270253 = 1373167191
BaseRepresentation
bin111001101111…
…0001100101101
32002221212222111
41303132030231
530222122003
63000444021
7515202316
oct163361455
962855874
1030270253
11160a5542
12a179611
13636acc0
14403d60d
1529cde6d
hex1cde32d

30270253 has 16 divisors (see below), whose sum is σ = 33417216. Its totient is φ = 27250560.

The previous prime is 30270239. The next prime is 30270257. The reversal of 30270253 is 35207203.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30270253 - 25 = 30270221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30270257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158388 + ... + 158578.

It is an arithmetic number, because the mean of its divisors is an integer number (2088576).

Almost surely, 230270253 is an apocalyptic number.

It is an amenable number.

30270253 is a deficient number, since it is larger than the sum of its proper divisors (3146963).

30270253 is a wasteful number, since it uses less digits than its factorization.

30270253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 30270253 is about 5501.8408737440. The cubic root of 30270253 is about 311.6535060104.

Adding to 30270253 its reverse (35207203), we get a palindrome (65477456).

The spelling of 30270253 in words is "thirty million, two hundred seventy thousand, two hundred fifty-three".

Divisors: 1 13 73 167 191 949 2171 2483 12191 13943 31897 158483 181259 414661 2328481 30270253