20432104 has 64 divisors (see below), whose sum is σ = 48988800. Its totient is φ = 7756800.

The previous prime is 20432101. The next prime is 20432107. The reversal of 20432104 is 40123402.

It is an interprime number because it is at equal distance from previous prime (20432101) and next prime (20432107).

It is not an unprimeable number, because it can be changed into a prime (20432101) 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 15 ways as a sum of consecutive naturals, for example, 24852 + ... + 25660.

It is an arithmetic number, because the mean of its divisors is an integer number (765450).

Almost surely, 2^20432104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20432104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24494400).

20432104 is an abundant number, since it is smaller than the sum of its proper divisors (28556696).

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

20432104 is a wasteful number, since it uses less digits than its factorization.

20432104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20432104 is about 4520.1884916450. The cubic root of 20432104 is about 273.3827011101.

Adding to 20432104 its reverse (40123402), we get a palindrome (60555506).

The spelling of 20432104 in words is "twenty million, four hundred thirty-two thousand, one hundred four".