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30460645 = 538915661
BaseRepresentation
bin111010000110…
…0101011100101
32010022120011001
41310030223211
530244220040
63004513301
7516624355
oct164145345
963276131
1030460645
1116215596
12a24b831
136406867
14408cb65
152a1a59a
hex1d0cae5

30460645 has 8 divisors (see below), whose sum is σ = 36649080. Its totient is φ = 24304320.

The previous prime is 30460601. The next prime is 30460649. The reversal of 30460645 is 54606403.

It can be written as a sum of positive squares in 4 ways, for example, as 7717284 + 22743361 = 2778^2 + 4769^2 .

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

It is a de Polignac number, because none of the positive numbers 2k-30460645 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30460649) 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, 5886 + ... + 9775.

It is an arithmetic number, because the mean of its divisors is an integer number (4581135).

Almost surely, 230460645 is an apocalyptic number.

It is an amenable number.

30460645 is a deficient number, since it is larger than the sum of its proper divisors (6188435).

30460645 is a wasteful number, since it uses less digits than its factorization.

30460645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16055.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 30460645 is about 5519.1163241954. The cubic root of 30460645 is about 312.3055472938.

The spelling of 30460645 in words is "thirty million, four hundred sixty thousand, six hundred forty-five".

Divisors: 1 5 389 1945 15661 78305 6092129 30460645