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30517814 = 221417127
BaseRepresentation
bin111010001101…
…0101000110110
32010102110120102
41310122220312
530303032224
63010034102
7520253135
oct164325066
963373512
1030517814
1116254538
12a278932
1364268a2
1440a591c
152a2c4ae
hex1d1aa36

30517814 has 8 divisors (see below), whose sum is σ = 45804528. Its totient is φ = 15249640.

The previous prime is 30517811. The next prime is 30517841. The reversal of 30517814 is 41871503.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30517811) 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 3 ways as a sum of consecutive naturals, for example, 719 + ... + 7845.

It is an arithmetic number, because the mean of its divisors is an integer number (5725566).

Almost surely, 230517814 is an apocalyptic number.

30517814 is a deficient number, since it is larger than the sum of its proper divisors (15286714).

30517814 is a wasteful number, since it uses less digits than its factorization.

30517814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9270.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 30517814 is about 5524.2930769466. The cubic root of 30517814 is about 312.5008051179.

The spelling of 30517814 in words is "thirty million, five hundred seventeen thousand, eight hundred fourteen".

Divisors: 1 2 2141 4282 7127 14254 15258907 30517814