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30395982 = 235065997
BaseRepresentation
bin111001111110…
…0111001001110
32010012021110010
41303330321032
530240132412
63003254050
7516235011
oct163747116
963167403
1030395982
1116180a51
12a21a326
1363b32b6
144073378
152a0633c
hex1cfce4e

30395982 has 8 divisors (see below), whose sum is σ = 60791976. Its totient is φ = 10131992.

The previous prime is 30395947. The next prime is 30395993. The reversal of 30395982 is 28959303.

It is a sphenic number, since it is the product of 3 distinct primes.

30395982 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 30395982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2532993 + ... + 2533004.

It is an arithmetic number, because the mean of its divisors is an integer number (7598997).

Almost surely, 230395982 is an apocalyptic number.

30395982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30395982 is a wasteful number, since it uses less digits than its factorization.

30395982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5066002.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 30395982 is about 5513.2551183489. The cubic root of 30395982 is about 312.0843994221.

The spelling of 30395982 in words is "thirty million, three hundred ninety-five thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 5065997 10131994 15197991 30395982