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30803427 = 3219180137
BaseRepresentation
bin111010110000…
…0010111100011
32010221222100200
41311200113203
530341202202
63020120243
7522552624
oct165402743
963858320
1030803427
111642a086
12a396083
1364c68a5
14413ba4b
152a86e1c
hex1d605e3

30803427 has 12 divisors (see below), whose sum is σ = 46835880. Its totient is φ = 19454688.

The previous prime is 30803413. The next prime is 30803431. The reversal of 30803427 is 72430803.

It is not a de Polignac number, because 30803427 - 26 = 30803363 is a prime.

It is a super-2 number, since 2×308034272 = 1897702229888658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30803427.

It is not an unprimeable number, because it can be changed into a prime (30803327) 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 11 ways as a sum of consecutive naturals, for example, 89898 + ... + 90239.

It is an arithmetic number, because the mean of its divisors is an integer number (3902990).

Almost surely, 230803427 is an apocalyptic number.

30803427 is a deficient number, since it is larger than the sum of its proper divisors (16032453).

30803427 is a wasteful number, since it uses less digits than its factorization.

30803427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180162 (or 180159 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30803427 is about 5550.0835128852. The cubic root of 30803427 is about 313.4726668935.

The spelling of 30803427 in words is "thirty million, eight hundred three thousand, four hundred twenty-seven".

Divisors: 1 3 9 19 57 171 180137 540411 1621233 3422603 10267809 30803427