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30110857 = 74301551
BaseRepresentation
bin111001011011…
…1010010001001
32002122210022221
41302313102021
530202021412
62553214041
7513636520
oct162672211
962583287
1030110857
1115aa6807
12a101321
13631359a
143ddb4b7
15299bb07
hex1cb7489

30110857 has 4 divisors (see below), whose sum is σ = 34412416. Its totient is φ = 25809300.

The previous prime is 30110849. The next prime is 30110897. The reversal of 30110857 is 75801103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30110857 - 23 = 30110849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30110807) 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 3 ways as a sum of consecutive naturals, for example, 2150769 + ... + 2150782.

It is an arithmetic number, because the mean of its divisors is an integer number (8603104).

Almost surely, 230110857 is an apocalyptic number.

It is an amenable number.

30110857 is a deficient number, since it is larger than the sum of its proper divisors (4301559).

30110857 is an equidigital number, since it uses as much as digits as its factorization.

30110857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4301558.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 30110857 is about 5487.3360567765. The cubic root of 30110857 is about 311.1055117709.

The spelling of 30110857 in words is "thirty million, one hundred ten thousand, eight hundred fifty-seven".

Divisors: 1 7 4301551 30110857