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30301057 = 127238591
BaseRepresentation
bin111001110010…
…1101110000001
32010000110020101
41303211232001
530224113212
63001242401
7515361163
oct163455601
963013211
1030301057
11161166a6
12a193401
13637c027
14404a933
1529d8157
hex1ce5b81

30301057 has 4 divisors (see below), whose sum is σ = 30539776. Its totient is φ = 30062340.

The previous prime is 30301031. The next prime is 30301109. The reversal of 30301057 is 75010303.

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 30301057 - 215 = 30268289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30301457) 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, 119169 + ... + 119422.

It is an arithmetic number, because the mean of its divisors is an integer number (7634944).

Almost surely, 230301057 is an apocalyptic number.

It is an amenable number.

30301057 is a deficient number, since it is larger than the sum of its proper divisors (238719).

30301057 is a wasteful number, since it uses less digits than its factorization.

30301057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238718.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 30301057 is about 5504.6395885653. The cubic root of 30301057 is about 311.7591864393.

The spelling of 30301057 in words is "thirty million, three hundred one thousand, fifty-seven".

Divisors: 1 127 238591 30301057