20530338 has 16 divisors (see below), whose sum is σ = 42170880. Its totient is φ = 6658416.

The previous prime is 20530333. The next prime is 20530351. The reversal of 20530338 is 83303502.

It is not an unprimeable number, because it can be changed into a prime (20530331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46018 + ... + 46461.

It is an arithmetic number, because the mean of its divisors is an integer number (2635680).

Almost surely, 2^20530338 is an apocalyptic number.

20530338 is an abundant number, since it is smaller than the sum of its proper divisors (21640542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20530338 is a wasteful number, since it uses less digits than its factorization.

20530338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92521.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20530338 is about 4531.0416021043. The cubic root of 20530338 is about 273.8201263182.

The spelling of 20530338 in words is "twenty million, five hundred thirty thousand, three hundred thirty-eight".