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30128214 = 235021369
BaseRepresentation
bin111001011101…
…1100001010110
32002200200010210
41302323201112
530203100324
62553430250
7514041234
oct162734126
962620123
1030128214
1116008856
12a10b386
13631b45c
144003954
1529a1d29
hex1cbb856

30128214 has 8 divisors (see below), whose sum is σ = 60256440. Its totient is φ = 10042736.

The previous prime is 30128209. The next prime is 30128239. The reversal of 30128214 is 41282103.

It is a sphenic number, since it is the product of 3 distinct primes.

30128214 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2510679 + ... + 2510690.

It is an arithmetic number, because the mean of its divisors is an integer number (7532055).

Almost surely, 230128214 is an apocalyptic number.

30128214 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.

30128214 is a wasteful number, since it uses less digits than its factorization.

30128214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021374.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 30128214 is about 5488.9173795932. The cubic root of 30128214 is about 311.1652778230.

The spelling of 30128214 in words is "thirty million, one hundred twenty-eight thousand, two hundred fourteen".

Divisors: 1 2 3 6 5021369 10042738 15064107 30128214