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38216423 = 72779927
BaseRepresentation
bin1001000111001…
…0001011100111
32122220121002002
42101302023213
534240411143
63443035515
7642556100
oct221621347
978817062
1038216423
111a632623
121096bb9b
137bc0a8b
14510b3a7
15354d5b8
hex24722e7

38216423 has 6 divisors (see below), whose sum is σ = 44455896. Its totient is φ = 32756892.

The previous prime is 38216419. The next prime is 38216443. The reversal of 38216423 is 32461283.

38216423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38216423 - 22 = 38216419 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 (38216443) 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 5 ways as a sum of consecutive naturals, for example, 389915 + ... + 390012.

It is an arithmetic number, because the mean of its divisors is an integer number (7409316).

Almost surely, 238216423 is an apocalyptic number.

38216423 is a deficient number, since it is larger than the sum of its proper divisors (6239473).

38216423 is an equidigital number, since it uses as much as digits as its factorization.

38216423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779941 (or 779934 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 38216423 is about 6181.9433028781. The cubic root of 38216423 is about 336.8345861453.

The spelling of 38216423 in words is "thirty-eight million, two hundred sixteen thousand, four hundred twenty-three".

Divisors: 1 7 49 779927 5459489 38216423