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30487461 = 310199973
BaseRepresentation
bin111010001001…
…1001110100101
32010100220221020
41310103032211
530301044321
63005241353
7520065504
oct164231645
963326836
1030487461
1116233754
12a263259
136415b24
14409883b
152a234c6
hex1d133a5

30487461 has 8 divisors (see below), whose sum is σ = 40693920. Its totient is φ = 20302992.

The previous prime is 30487433. The next prime is 30487463. The reversal of 30487461 is 16478403.

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

It is not a de Polignac number, because 30487461 - 210 = 30486437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30487463) by changing a digit.

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, 1930 + ... + 8043.

It is an arithmetic number, because the mean of its divisors is an integer number (5086740).

Almost surely, 230487461 is an apocalyptic number.

It is an amenable number.

30487461 is a deficient number, since it is larger than the sum of its proper divisors (10206459).

30487461 is a wasteful number, since it uses less digits than its factorization.

30487461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10995.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 30487461 is about 5521.5451641728. The cubic root of 30487461 is about 312.3971663778.

The spelling of 30487461 in words is "thirty million, four hundred eighty-seven thousand, four hundred sixty-one".

Divisors: 1 3 1019 3057 9973 29919 10162487 30487461