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38300989 = 173221393
BaseRepresentation
bin1001001000011…
…0110100111101
32200001220002011
42102012310331
534301112424
63444531221
7643360456
oct222066475
980056064
1038300989
111a690111
12109b0b11
137c2040c
14513012d
153568694
hex2486d3d

38300989 has 4 divisors (see below), whose sum is σ = 38522556. Its totient is φ = 38079424.

The previous prime is 38300987. The next prime is 38300993. The reversal of 38300989 is 98900383.

38300989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32684089 + 5616900 = 5717^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 38300989 - 21 = 38300987 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 (38300981) 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, 110524 + ... + 110869.

It is an arithmetic number, because the mean of its divisors is an integer number (9630639).

Almost surely, 238300989 is an apocalyptic number.

It is an amenable number.

38300989 is a deficient number, since it is larger than the sum of its proper divisors (221567).

38300989 is a wasteful number, since it uses less digits than its factorization.

38300989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221566.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 38300989 is about 6188.7792818940. The cubic root of 38300989 is about 337.0828543560.

The spelling of 38300989 in words is "thirty-eight million, three hundred thousand, nine hundred eighty-nine".

Divisors: 1 173 221393 38300989