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30504661 = 118931159
BaseRepresentation
bin111010001011…
…1011011010101
32010101210112021
41310113123111
530302122121
63005453141
7520166605
oct164273325
963353467
1030504661
1116245670
12a2711b1
1364208c5
1440a0c05
152a28641
hex1d176d5

30504661 has 8 divisors (see below), whose sum is σ = 33652800. Its totient is φ = 27419040.

The previous prime is 30504641. The next prime is 30504703. The reversal of 30504661 is 16640503.

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

It is not a de Polignac number, because 30504661 - 217 = 30373589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30504641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14601 + ... + 16558.

It is an arithmetic number, because the mean of its divisors is an integer number (4206600).

Almost surely, 230504661 is an apocalyptic number.

It is an amenable number.

30504661 is a deficient number, since it is larger than the sum of its proper divisors (3148139).

30504661 is a wasteful number, since it uses less digits than its factorization.

30504661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31259.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30504661 is about 5523.1024795852. The cubic root of 30504661 is about 312.4559033245.

The spelling of 30504661 in words is "thirty million, five hundred four thousand, six hundred sixty-one".

Divisors: 1 11 89 979 31159 342749 2773151 30504661