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30052137 = 312778877
BaseRepresentation
bin111001010100…
…0111100101001
32002112210210010
41302220330221
530143132022
62552042133
7513303363
oct162507451
962483703
1030052137
1115a66685
12a093349
1362c293b
143dc3d33
15298950c
hex1ca8f29

30052137 has 8 divisors (see below), whose sum is σ = 40385536. Its totient is φ = 19876752.

The previous prime is 30052133. The next prime is 30052157. The reversal of 30052137 is 73125003.

It is a happy number.

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

It is not a de Polignac number, because 30052137 - 22 = 30052133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30052133) 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, 39058 + ... + 39819.

It is an arithmetic number, because the mean of its divisors is an integer number (5048192).

Almost surely, 230052137 is an apocalyptic number.

It is an amenable number.

30052137 is a deficient number, since it is larger than the sum of its proper divisors (10333399).

30052137 is a wasteful number, since it uses less digits than its factorization.

30052137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79007.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 30052137 is about 5481.9829441544. The cubic root of 30052137 is about 310.9031483999.

The spelling of 30052137 in words is "thirty million, fifty-two thousand, one hundred thirty-seven".

Divisors: 1 3 127 381 78877 236631 10017379 30052137