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30255049 = 11193401
BaseRepresentation
bin111001101101…
…0011111001001
32002221010010101
41303122133021
530221130144
63000245401
7515110066
oct163323711
962833111
1030255049
1116095080
12a170861
1363640c6
144037c6d
1529c96d4
hex1cda7c9

30255049 has 16 divisors (see below), whose sum is σ = 34925760. Its totient is φ = 25992000.

The previous prime is 30255047. The next prime is 30255067. The reversal of 30255049 is 94055203.

It is not a de Polignac number, because 30255049 - 21 = 30255047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30255047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75249 + ... + 75649.

It is an arithmetic number, because the mean of its divisors is an integer number (2182860).

Almost surely, 230255049 is an apocalyptic number.

It is an amenable number.

30255049 is a deficient number, since it is larger than the sum of its proper divisors (4670711).

30255049 is an equidigital number, since it uses as much as digits as its factorization.

30255049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 30255049 is about 5500.4589808488. The cubic root of 30255049 is about 311.6013186539.

The spelling of 30255049 in words is "thirty million, two hundred fifty-five thousand, forty-nine".

Divisors: 1 11 19 209 361 401 3971 4411 6859 7619 75449 83809 144761 1592371 2750459 30255049