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30489115 = 510756989
BaseRepresentation
bin111010001001…
…1101000011011
32010101000012111
41310103220123
530301122430
63005253151
7520103356
oct164235033
963330174
1030489115
1116234a18
12a2641b7
1364167c7
14409929d
152a23c2a
hex1d13a1b

30489115 has 8 divisors (see below), whose sum is σ = 36929520. Its totient is φ = 24162912.

The previous prime is 30489101. The next prime is 30489149. The reversal of 30489115 is 51198403.

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

It is a cyclic number.

It is not a de Polignac number, because 30489115 - 25 = 30489083 is a prime.

It is a super-2 number, since 2×304891152 = 1859172266966450, which contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 27960 + ... + 29029.

It is an arithmetic number, because the mean of its divisors is an integer number (4616190).

Almost surely, 230489115 is an apocalyptic number.

30489115 is a deficient number, since it is larger than the sum of its proper divisors (6440405).

30489115 is a wasteful number, since it uses less digits than its factorization.

30489115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57101.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 30489115 is about 5521.6949390563. The cubic root of 30489115 is about 312.4028156464.

The spelling of 30489115 in words is "thirty million, four hundred eighty-nine thousand, one hundred fifteen".

Divisors: 1 5 107 535 56989 284945 6097823 30489115