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30385814 = 216699103
BaseRepresentation
bin111001111101…
…0011010010110
32010011202111112
41303322122112
530234321224
63003135022
7516163244
oct163723226
963152445
1030385814
1116174348
12a214472
1363ab794
14406d794
152a0330e
hex1cfa696

30385814 has 8 divisors (see below), whose sum is σ = 45611040. Its totient is φ = 15182136.

The previous prime is 30385811. The next prime is 30385819. The reversal of 30385814 is 41858303.

It is a happy number.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30385811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (5701380).

Almost surely, 230385814 is an apocalyptic number.

30385814 is a deficient number, since it is larger than the sum of its proper divisors (15225226).

30385814 is a wasteful number, since it uses less digits than its factorization.

30385814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10774.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 30385814 is about 5512.3328999617. The cubic root of 30385814 is about 312.0495962686.

The spelling of 30385814 in words is "thirty million, three hundred eighty-five thousand, eight hundred fourteen".

Divisors: 1 2 1669 3338 9103 18206 15192907 30385814