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30802284 = 2232855619
BaseRepresentation
bin111010110000…
…0000101101100
32010221220210100
41311200011230
530341133114
63020111100
7522546402
oct165400554
963856710
1030802284
1116429237
12a395490
1364c6206
14413b472
152a86909
hex1d6016c

30802284 has 18 divisors (see below), whose sum is σ = 77861420. Its totient is φ = 10267416.

The previous prime is 30802279. The next prime is 30802309. The reversal of 30802284 is 48220803.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 427774 + ... + 427845.

Almost surely, 230802284 is an apocalyptic number.

It is an amenable number.

30802284 is an abundant number, since it is smaller than the sum of its proper divisors (47059136).

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

30802284 is a wasteful number, since it uses less digits than its factorization.

30802284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855629 (or 855624 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 30802284 is about 5549.9805405064. The cubic root of 30802284 is about 313.4687895793.

The spelling of 30802284 in words is "thirty million, eight hundred two thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 9 12 18 36 855619 1711238 2566857 3422476 5133714 7700571 10267428 15401142 30802284