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30314540 = 2251515727
BaseRepresentation
bin111001110100…
…1000000101100
32010001010201202
41303221000230
530230031130
63001425032
7515445404
oct163510054
963033652
1030314540
1116125843
12a19b178
1363851c9
144051804
1529dc145
hex1ce902c

30314540 has 12 divisors (see below), whose sum is σ = 63660576. Its totient is φ = 12125808.

The previous prime is 30314533. The next prime is 30314549. The reversal of 30314540 is 4541303.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1515727 = 30314540 / (3 + 0 + 3 + 1 + 4 + 5 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (30314549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757844 + ... + 757883.

It is an arithmetic number, because the mean of its divisors is an integer number (5305048).

Almost surely, 230314540 is an apocalyptic number.

It is an amenable number.

30314540 is an abundant number, since it is smaller than the sum of its proper divisors (33346036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30314540 is a wasteful number, since it uses less digits than its factorization.

30314540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515736 (or 1515734 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30314540 is about 5505.8641465260. The cubic root of 30314540 is about 311.8054205338.

Adding to 30314540 its reverse (4541303), we get a palindrome (34855843).

The spelling of 30314540 in words is "thirty million, three hundred fourteen thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 1515727 3031454 6062908 7578635 15157270 30314540