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30487349 = 475312239
BaseRepresentation
bin111010001001…
…1001100110101
32010100220210002
41310103030311
530301043344
63005241045
7520065254
oct164231465
963326702
1030487349
1116233662
12a263185
136415a69
14409879b
152a2344e
hex1d13335

30487349 has 8 divisors (see below), whose sum is σ = 31726080. Its totient is φ = 29273296.

The previous prime is 30487339. The next prime is 30487361. The reversal of 30487349 is 94378403.

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 30487349 - 224 = 13710133 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 (30487309) 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, 3629 + ... + 8610.

It is an arithmetic number, because the mean of its divisors is an integer number (3965760).

Almost surely, 230487349 is an apocalyptic number.

It is an amenable number.

30487349 is a deficient number, since it is larger than the sum of its proper divisors (1238731).

30487349 is a wasteful number, since it uses less digits than its factorization.

30487349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12339.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 30487349 is about 5521.5350220749. The cubic root of 30487349 is about 312.3967838323.

The spelling of 30487349 in words is "thirty million, four hundred eighty-seven thousand, three hundred forty-nine".

Divisors: 1 47 53 2491 12239 575233 648667 30487349