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38305057 = 731176521
BaseRepresentation
bin1001001000011…
…1110100100001
32200002002122211
42102013310201
534301230212
63445002121
7643405360
oct222076441
980062584
1038305057
111a69317a
12109b3341
137c2221b
1451317d7
1535699a7
hex2487d21

38305057 has 8 divisors (see below), whose sum is σ = 45189632. Its totient is φ = 31773600.

The previous prime is 38305049. The next prime is 38305067. The reversal of 38305057 is 75050383.

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

It is a cyclic number.

It is not a de Polignac number, because 38305057 - 23 = 38305049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38305067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88044 + ... + 88477.

It is an arithmetic number, because the mean of its divisors is an integer number (5648704).

Almost surely, 238305057 is an apocalyptic number.

It is an amenable number.

38305057 is a deficient number, since it is larger than the sum of its proper divisors (6884575).

38305057 is a wasteful number, since it uses less digits than its factorization.

38305057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176559.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 38305057 is about 6189.1079324891. The cubic root of 38305057 is about 337.0947879426.

The spelling of 38305057 in words is "thirty-eight million, three hundred five thousand, fifty-seven".

Divisors: 1 7 31 217 176521 1235647 5472151 38305057