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30028412 = 227507103
BaseRepresentation
bin111001010001…
…1001001111100
32002111121020102
41302203021330
530141402122
62551340232
7513144251
oct162431174
962447212
1030028412
1115a4a877
12a081678
1362b4bbb
143db9428
152982492
hex1ca327c

30028412 has 6 divisors (see below), whose sum is σ = 52549728. Its totient is φ = 15014204.

The previous prime is 30028403. The next prime is 30028433. The reversal of 30028412 is 21482003.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3753548 + ... + 3753555.

It is an arithmetic number, because the mean of its divisors is an integer number (8758288).

Almost surely, 230028412 is an apocalyptic number.

It is an amenable number.

30028412 is a deficient number, since it is larger than the sum of its proper divisors (22521316).

30028412 is a wasteful number, since it uses less digits than its factorization.

30028412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507107 (or 7507105 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 30028412 is about 5479.8186101367. The cubic root of 30028412 is about 310.8213115229.

The spelling of 30028412 in words is "thirty million, twenty-eight thousand, four hundred twelve".

Divisors: 1 2 4 7507103 15014206 30028412