20832438 has 16 divisors (see below), whose sum is σ = 45452736. Its totient is φ = 6312840.

The previous prime is 20832433. The next prime is 20832439. The reversal of 20832438 is 83423802.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20832433) 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, 157756 + ... + 157887.

It is an arithmetic number, because the mean of its divisors is an integer number (2840796).

Almost surely, 2^20832438 is an apocalyptic number.

20832438 is an abundant number, since it is smaller than the sum of its proper divisors (24620298).

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

20832438 is a wasteful number, since it uses less digits than its factorization.

20832438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315659.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 20832438 is about 4564.2565659700. The cubic root of 20832438 is about 275.1566622507.

The spelling of 20832438 in words is "twenty million, eight hundred thirty-two thousand, four hundred thirty-eight".