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30123349 = 431096427
BaseRepresentation
bin111001011101…
…0010101010101
32002200102110121
41302322111111
530202421344
62553351541
7514021114
oct162722525
962612417
1030123349
1116005133
12a1085b1
136319189
144001c7b
1529a0684
hex1cba555

30123349 has 8 divisors (see below), whose sum is σ = 31111520. Its totient is φ = 29148336.

The previous prime is 30123329. The next prime is 30123367. The reversal of 30123349 is 94332103.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30123349 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 (30123329) 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, 1474 + ... + 7900.

It is an arithmetic number, because the mean of its divisors is an integer number (3888940).

Almost surely, 230123349 is an apocalyptic number.

It is an amenable number.

30123349 is a deficient number, since it is larger than the sum of its proper divisors (988171).

30123349 is a wasteful number, since it uses less digits than its factorization.

30123349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30123349 is about 5488.4741959856. The cubic root of 30123349 is about 311.1485282897.

The spelling of 30123349 in words is "thirty million, one hundred twenty-three thousand, three hundred forty-nine".

Divisors: 1 43 109 4687 6427 276361 700543 30123349