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30323969 = 134156893
BaseRepresentation
bin111001110101…
…1010100000001
32010001121122222
41303223110001
530230331334
63001540425
7515515034
oct163532401
963047588
1030323969
1116131935
12a1a4715
1363895a0
14405501b
1529ded2e
hex1ceb501

30323969 has 8 divisors (see below), whose sum is σ = 33453672. Its totient is φ = 27308160.

The previous prime is 30323963. The next prime is 30324001. The reversal of 30323969 is 96932303.

It can be written as a sum of positive squares in 4 ways, for example, as 2371600 + 27952369 = 1540^2 + 5287^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30323969 - 212 = 30319873 is a prime.

It is a super-2 number, since 2×303239692 = 1839086191825922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30323963) 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, 27914 + ... + 28979.

It is an arithmetic number, because the mean of its divisors is an integer number (4181709).

Almost surely, 230323969 is an apocalyptic number.

It is an amenable number.

30323969 is a deficient number, since it is larger than the sum of its proper divisors (3129703).

30323969 is a wasteful number, since it uses less digits than its factorization.

30323969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56947.

The product of its (nonzero) digits is 26244, while the sum is 35.

The square root of 30323969 is about 5506.7203488102. The cubic root of 30323969 is about 311.8377450502.

The spelling of 30323969 in words is "thirty million, three hundred twenty-three thousand, nine hundred sixty-nine".

Divisors: 1 13 41 533 56893 739609 2332613 30323969