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38294923 = 54770009
BaseRepresentation
bin1001001000010…
…1010110001011
32200001120202111
42102011112023
534300414143
63444443151
7643334002
oct222052613
980046674
1038294923
111a6865a7
12109a94b7
137c1a724
14512bc39
15356699d
hex248558b

38294923 has 4 divisors (see below), whose sum is σ = 38365480. Its totient is φ = 38224368.

The previous prime is 38294911. The next prime is 38294939. The reversal of 38294923 is 32949283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32949283 = 109302287.

It is a cyclic number.

It is not a de Polignac number, because 38294923 - 25 = 38294891 is a prime.

It is a super-2 number, since 2×382949232 = 2933002255151858, which contains 22 as substring.

It is a Duffinian number.

38294923 is a modest number, since divided by 4923 gives 3829 as remainder.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (38291923) 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 3 ways as a sum of consecutive naturals, for example, 34458 + ... + 35551.

It is an arithmetic number, because the mean of its divisors is an integer number (9591370).

Almost surely, 238294923 is an apocalyptic number.

38294923 is a deficient number, since it is larger than the sum of its proper divisors (70557).

38294923 is an equidigital number, since it uses as much as digits as its factorization.

38294923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70556.

The product of its digits is 93312, while the sum is 40.

The square root of 38294923 is about 6188.2891819953. The cubic root of 38294923 is about 337.0650580135.

The spelling of 38294923 in words is "thirty-eight million, two hundred ninety-four thousand, nine hundred twenty-three".

Divisors: 1 547 70009 38294923