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30382856 = 237542551
BaseRepresentation
bin111001111100…
…1101100001000
32010011121102222
41303321230020
530234222411
63003113212
7516151520
oct163715410
963147388
1030382856
11161720a9
12a212808
1363aa32a
14406c680
152a024db
hex1cf9b08

30382856 has 16 divisors (see below), whose sum is σ = 65106240. Its totient is φ = 13021200.

The previous prime is 30382853. The next prime is 30382867. The reversal of 30382856 is 65828303.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30382853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271220 + ... + 271331.

It is an arithmetic number, because the mean of its divisors is an integer number (4069140).

Almost surely, 230382856 is an apocalyptic number.

It is an amenable number.

30382856 is an abundant number, since it is smaller than the sum of its proper divisors (34723384).

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

30382856 is a wasteful number, since it uses less digits than its factorization.

30382856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542564 (or 542560 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 30382856 is about 5512.0645859787. The cubic root of 30382856 is about 312.0394701326.

The spelling of 30382856 in words is "thirty million, three hundred eighty-two thousand, eight hundred fifty-six".

Divisors: 1 2 4 7 8 14 28 56 542551 1085102 2170204 3797857 4340408 7595714 15191428 30382856