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30348942 = 2313389089
BaseRepresentation
bin111001111000…
…1011010001110
32010002212220220
41303301122032
530232131232
63002252210
7515650611
oct163613216
963085826
1030348942
1116149678
12a1b7066
136397a70
144060178
1529e742c
hex1cf168e

30348942 has 16 divisors (see below), whose sum is σ = 65367120. Its totient is φ = 9338112.

The previous prime is 30348931. The next prime is 30348943. The reversal of 30348942 is 24984303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30348943) 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, 194467 + ... + 194622.

It is an arithmetic number, because the mean of its divisors is an integer number (4085445).

Almost surely, 230348942 is an apocalyptic number.

30348942 is an abundant number, since it is smaller than the sum of its proper divisors (35018178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30348942 is a wasteful number, since it uses less digits than its factorization.

30348942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389107.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 30348942 is about 5508.9873842658. The cubic root of 30348942 is about 311.9233251756.

The spelling of 30348942 in words is "thirty million, three hundred forty-eight thousand, nine hundred forty-two".

Divisors: 1 2 3 6 13 26 39 78 389089 778178 1167267 2334534 5058157 10116314 15174471 30348942