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30027078 = 2334711831
BaseRepresentation
bin111001010001…
…0110101000110
32002111112102000
41302202311012
530141331303
62551330130
7513140334
oct162426506
962445360
1030027078
1115a49874
12a080946
1362b4403
143db8b54
152981da3
hex1ca2d46

30027078 has 32 divisors (see below), whose sum is σ = 68152320. Its totient is φ = 9795240.

The previous prime is 30027061. The next prime is 30027103. The reversal of 30027078 is 87072003.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3378 + ... + 8453.

It is an arithmetic number, because the mean of its divisors is an integer number (2129760).

Almost surely, 230027078 is an apocalyptic number.

30027078 is an abundant number, since it is smaller than the sum of its proper divisors (38125242).

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

30027078 is a wasteful number, since it uses less digits than its factorization.

30027078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11889 (or 11883 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 30027078 is about 5479.6968894274. The cubic root of 30027078 is about 310.8167087512.

The spelling of 30027078 in words is "thirty million, twenty-seven thousand, seventy-eight".

Divisors: 1 2 3 6 9 18 27 47 54 94 141 282 423 846 1269 2538 11831 23662 35493 70986 106479 212958 319437 556057 638874 1112114 1668171 3336342 5004513 10009026 15013539 30027078