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30344979 = 371444999
BaseRepresentation
bin111001111000…
…0011100010011
32010002200111010
41303300130103
530232014404
63002222003
7515633220
oct163603423
963080433
1030344979
11161466a5
12a1b4903
136396012
14405c947
1529e6189
hex1cf0713

30344979 has 8 divisors (see below), whose sum is σ = 46240000. Its totient is φ = 17339976.

The previous prime is 30344969. The next prime is 30344987. The reversal of 30344979 is 97944303.

30344979 is nontrivially palindromic in base 6.

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

It is not a de Polignac number, because 30344979 - 27 = 30344851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30344929) 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, 722479 + ... + 722520.

It is an arithmetic number, because the mean of its divisors is an integer number (5780000).

Almost surely, 230344979 is an apocalyptic number.

30344979 is a deficient number, since it is larger than the sum of its proper divisors (15895021).

30344979 is a wasteful number, since it uses less digits than its factorization.

30344979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445009.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 30344979 is about 5508.6276875461. The cubic root of 30344979 is about 311.9097474815.

The spelling of 30344979 in words is "thirty million, three hundred forty-four thousand, nine hundred seventy-nine".

Divisors: 1 3 7 21 1444999 4334997 10114993 30344979