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30069816 = 2337178987
BaseRepresentation
bin111001010110…
…1010000111000
32002120201000220
41302231100320
530144213231
62552300040
7513406050
oct162552070
962521026
1030069816
1115a78997
12a0a1620
1362ca9ba
143dca560
15298e896
hex1cad438

30069816 has 32 divisors (see below), whose sum is σ = 85914240. Its totient is φ = 8591328.

The previous prime is 30069803. The next prime is 30069829. The reversal of 30069816 is 61896003.

It is an interprime number because it is at equal distance from previous prime (30069803) and next prime (30069829).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89326 + ... + 89661.

It is an arithmetic number, because the mean of its divisors is an integer number (2684820).

Almost surely, 230069816 is an apocalyptic number.

It is an amenable number.

30069816 is an abundant number, since it is smaller than the sum of its proper divisors (55844424).

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

30069816 is a wasteful number, since it uses less digits than its factorization.

30069816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179003 (or 178999 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 30069816 is about 5483.5951710534. The cubic root of 30069816 is about 310.9641022382.

The spelling of 30069816 in words is "thirty million, sixty-nine thousand, eight hundred sixteen".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 178987 357974 536961 715948 1073922 1252909 1431896 2147844 2505818 3758727 4295688 5011636 7517454 10023272 15034908 30069816