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20383009 is a prime number
BaseRepresentation
bin100110111000…
…0010100100001
31102100120020021
41031300110201
520204224014
62004513441
7335152453
oct115602441
942316207
1020383009
1110562069
1269ab881
1342b886a
1429c82d3
151bc9624
hex1370521

20383009 has 2 divisors, whose sum is σ = 20383010. Its totient is φ = 20383008.

The previous prime is 20382961. The next prime is 20383019. The reversal of 20383009 is 90038302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20223009 + 160000 = 4497^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 20383009 - 221 = 18285857 is a prime.

It is not a weakly prime, because it can be changed into another prime (20383019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10191504 + 10191505.

It is an arithmetic number, because the mean of its divisors is an integer number (10191505).

Almost surely, 220383009 is an apocalyptic number.

It is an amenable number.

20383009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20383009 is an equidigital number, since it uses as much as digits as its factorization.

20383009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20383009 is about 4514.7545891222. The cubic root of 20383009 is about 273.1635608761.

The spelling of 20383009 in words is "twenty million, three hundred eighty-three thousand, nine".