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38390053 = 133779813
BaseRepresentation
bin1001001001110…
…0100100100101
32200020102020211
42102130210211
534311440203
63450455421
7644211232
oct222344445
980212224
1038390053
111a741019
1210a34571
137c51b10
145154789
153584c6d
hex249c925

38390053 has 8 divisors (see below), whose sum is σ = 42461048. Its totient is φ = 34478784.

The previous prime is 38390041. The next prime is 38390069. The reversal of 38390053 is 35009383.

It can be written as a sum of positive squares in 4 ways, for example, as 18122049 + 20268004 = 4257^2 + 4502^2 .

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 38390053 - 217 = 38258981 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 38389997 and 38390024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38390083) 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, 39426 + ... + 40387.

It is an arithmetic number, because the mean of its divisors is an integer number (5307631).

Almost surely, 238390053 is an apocalyptic number.

It is an amenable number.

38390053 is a deficient number, since it is larger than the sum of its proper divisors (4070995).

38390053 is a wasteful number, since it uses less digits than its factorization.

38390053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79863.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 38390053 is about 6195.9707068384. The cubic root of 38390053 is about 337.3439329636.

The spelling of 38390053 in words is "thirty-eight million, three hundred ninety thousand, fifty-three".

Divisors: 1 13 37 481 79813 1037569 2953081 38390053