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30830247805 = 57880864223
BaseRepresentation
bin11100101101101000…
…000011111101111101
32221120121112212020211
4130231220003331331
51001120020412210
622055131112421
72141000532250
oct345550037575
987517485224
1030830247805
1112090964545
125b84ba2711
132ba43a89a6
1416c6809097
15c0697838a
hex72da03f7d

30830247805 has 8 divisors (see below), whose sum is σ = 42281482752. Its totient is φ = 21140741328.

The previous prime is 30830247803. The next prime is 30830247809. The reversal of 30830247805 is 50874203803.

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

It is not a de Polignac number, because 30830247805 - 21 = 30830247803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30830247803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440432077 + ... + 440432146.

It is an arithmetic number, because the mean of its divisors is an integer number (5285185344).

Almost surely, 230830247805 is an apocalyptic number.

30830247805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30830247805 is a deficient number, since it is larger than the sum of its proper divisors (11451234947).

30830247805 is an equidigital number, since it uses as much as digits as its factorization.

30830247805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880864235.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 30830247805 in words is "thirty billion, eight hundred thirty million, two hundred forty-seven thousand, eight hundred five".

Divisors: 1 5 7 35 880864223 4404321115 6166049561 30830247805