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30444709 = 239111453
BaseRepresentation
bin111010000100…
…0110010100101
32010021202021211
41310020302211
530243212314
63004311421
7516530041
oct164106245
963252254
1030444709
1116204619
12a242571
1363cc529
144087021
152a159c4
hex1d08ca5

30444709 has 8 divisors (see below), whose sum is σ = 31825152. Its totient is φ = 29069040.

The previous prime is 30444703. The next prime is 30444719. The reversal of 30444709 is 90744403.

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 30444709 - 25 = 30444677 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 (30444703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20227 + ... + 21679.

It is an arithmetic number, because the mean of its divisors is an integer number (3978144).

Almost surely, 230444709 is an apocalyptic number.

It is an amenable number.

30444709 is a deficient number, since it is larger than the sum of its proper divisors (1380443).

30444709 is a wasteful number, since it uses less digits than its factorization.

30444709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30444709 is about 5517.6724259419. The cubic root of 30444709 is about 312.2510751559.

The spelling of 30444709 in words is "thirty million, four hundred forty-four thousand, seven hundred nine".

Divisors: 1 23 911 1453 20953 33419 1323683 30444709