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30442517 = 74439817
BaseRepresentation
bin111010000100…
…0010000010101
32010021122021122
41310020100111
530243130032
63004253325
7516520460
oct164102025
963248248
1030442517
1116202a06
12a241245
1363cb531
1440862d7
152a15012
hex1d08415

30442517 has 8 divisors (see below), whose sum is σ = 34873536. Its totient is φ = 26032032.

The previous prime is 30442499. The next prime is 30442537. The reversal of 30442517 is 71524403.

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 30442517 - 210 = 30441493 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 (30442537) 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, 1808 + ... + 8009.

It is an arithmetic number, because the mean of its divisors is an integer number (4359192).

Almost surely, 230442517 is an apocalyptic number.

It is an amenable number.

30442517 is a deficient number, since it is larger than the sum of its proper divisors (4431019).

30442517 is an equidigital number, since it uses as much as digits as its factorization.

30442517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10267.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 30442517 is about 5517.4737878852. The cubic root of 30442517 is about 312.2435810153.

The spelling of 30442517 in words is "thirty million, four hundred forty-two thousand, five hundred seventeen".

Divisors: 1 7 443 3101 9817 68719 4348931 30442517