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30442243 = 132718641
BaseRepresentation
bin111010000100…
…0001100000011
32010021121220111
41310020030003
530243122433
63004252151
7516516616
oct164101403
963247814
1030442243
1116202787
12a241057
1363cb380
14408617d
152a14dcd
hex1d08303

30442243 has 8 divisors (see below), whose sum is σ = 32908736. Its totient is φ = 27993600.

The previous prime is 30442219. The next prime is 30442259. The reversal of 30442243 is 34224403.

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 30442243 - 25 = 30442211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30442273) 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, 798 + ... + 7843.

It is an arithmetic number, because the mean of its divisors is an integer number (4113592).

Almost surely, 230442243 is an apocalyptic number.

30442243 is a deficient number, since it is larger than the sum of its proper divisors (2466493).

30442243 is a wasteful number, since it uses less digits than its factorization.

30442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8925.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 30442243 is about 5517.4489576253. The cubic root of 30442243 is about 312.2426442225.

Adding to 30442243 its reverse (34224403), we get a palindrome (64666646).

The spelling of 30442243 in words is "thirty million, four hundred forty-two thousand, two hundred forty-three".

Divisors: 1 13 271 3523 8641 112333 2341711 30442243