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30486158 = 215243079
BaseRepresentation
bin111010001001…
…0111010001110
32010100212010222
41310102322032
530301024113
63005231342
7520061633
oct164227216
963325128
1030486158
111623277a
12a262552
136415361
14409818a
152a22e08
hex1d12e8e

30486158 has 4 divisors (see below), whose sum is σ = 45729240. Its totient is φ = 15243078.

The previous prime is 30486121. The next prime is 30486161. The reversal of 30486158 is 85168403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85168403 = 531606951.

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, 7621538 + ... + 7621541.

It is an arithmetic number, because the mean of its divisors is an integer number (11432310).

Almost surely, 230486158 is an apocalyptic number.

30486158 is a deficient number, since it is larger than the sum of its proper divisors (15243082).

30486158 is a wasteful number, since it uses less digits than its factorization.

30486158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15243081.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 30486158 is about 5521.4271705783. The cubic root of 30486158 is about 312.3927158125.

The spelling of 30486158 in words is "thirty million, four hundred eighty-six thousand, one hundred fifty-eight".

Divisors: 1 2 15243079 30486158