20039229 has 24 divisors (see below), whose sum is σ = 33284160. Its totient is φ = 11380608.

The previous prime is 20039221. The next prime is 20039251. The reversal of 20039229 is 92293002.

It is not a de Polignac number, because 20039229 - 2³ = 20039221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20039221) 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 23 ways as a sum of consecutive naturals, for example, 10389 + ... + 12165.

It is an arithmetic number, because the mean of its divisors is an integer number (1386840).

Almost surely, 2^20039229 is an apocalyptic number.

It is an amenable number.

20039229 is a deficient number, since it is larger than the sum of its proper divisors (13244931).

20039229 is a wasteful number, since it uses less digits than its factorization.

20039229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 20039229 is about 4476.5197419424. The cubic root of 20039229 is about 271.6191188987.

The spelling of 20039229 in words is "twenty million, thirty-nine thousand, two hundred twenty-nine".