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30260939 = 192369247
BaseRepresentation
bin111001101101…
…1111011001011
32002221102012112
41303123323023
530221322224
63000332535
7515133212
oct163337313
962842175
1030260939
1116099545
12a17414b
1363669a7
14403a079
1529cb30e
hex1cdbecb

30260939 has 8 divisors (see below), whose sum is σ = 33239040. Its totient is φ = 27421416.

The previous prime is 30260927. The next prime is 30260953. The reversal of 30260939 is 93906203.

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 30260939 - 212 = 30256843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30260959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34187 + ... + 35060.

It is an arithmetic number, because the mean of its divisors is an integer number (4154880).

Almost surely, 230260939 is an apocalyptic number.

30260939 is a deficient number, since it is larger than the sum of its proper divisors (2978101).

30260939 is a wasteful number, since it uses less digits than its factorization.

30260939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69289.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 30260939 is about 5500.9943646581. The cubic root of 30260939 is about 311.6215380084.

The spelling of 30260939 in words is "thirty million, two hundred sixty thousand, nine hundred thirty-nine".

Divisors: 1 19 23 437 69247 1315693 1592681 30260939