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30381484 = 2271085053
BaseRepresentation
bin111001111100…
…1010110101100
32010011112120011
41303321112230
530234201414
63003103004
7516144520
oct163712654
963145504
1030381484
1116171071
12a211a64
1363a9813
14406bd80
152a01dc4
hex1cf95ac

30381484 has 12 divisors (see below), whose sum is σ = 60763024. Its totient is φ = 13020624.

The previous prime is 30381479. The next prime is 30381487. The reversal of 30381484 is 48418303.

30381484 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30381487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542499 + ... + 542554.

Almost surely, 230381484 is an apocalyptic number.

It is an amenable number.

30381484 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.

30381484 is a wasteful number, since it uses less digits than its factorization.

30381484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085064 (or 1085062 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 30381484 is about 5511.9401302989. The cubic root of 30381484 is about 312.0347731350.

Adding to 30381484 its reverse (48418303), we get a palindrome (78799787).

The spelling of 30381484 in words is "thirty million, three hundred eighty-one thousand, four hundred eighty-four".

Divisors: 1 2 4 7 14 28 1085053 2170106 4340212 7595371 15190742 30381484