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30236908 = 22132920051
BaseRepresentation
bin111001101011…
…0000011101100
32002220012020111
41303112003230
530220040113
63000025404
7515003152
oct163260354
962805214
1030236908
1116082489
12a162264
136358a80
1440313d2
1529c413d
hex1cd60ec

30236908 has 24 divisors (see below), whose sum is σ = 58952880. Its totient is φ = 13473600.

The previous prime is 30236903. The next prime is 30236909. The reversal of 30236908 is 80963203.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30236908.

It is not an unprimeable number, because it can be changed into a prime (30236903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8518 + ... + 11533.

It is an arithmetic number, because the mean of its divisors is an integer number (2456370).

Almost surely, 230236908 is an apocalyptic number.

It is an amenable number.

30236908 is a deficient number, since it is larger than the sum of its proper divisors (28715972).

30236908 is a wasteful number, since it uses less digits than its factorization.

30236908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20097 (or 20095 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 30236908 is about 5498.8096893782. The cubic root of 30236908 is about 311.5390272361.

The spelling of 30236908 in words is "thirty million, two hundred thirty-six thousand, nine hundred eight".

Divisors: 1 2 4 13 26 29 52 58 116 377 754 1508 20051 40102 80204 260663 521326 581479 1042652 1162958 2325916 7559227 15118454 30236908