20401204 has 12 divisors (see below), whose sum is σ = 35761824. Its totient is φ = 10183544.

The previous prime is 20401141. The next prime is 20401217. The reversal of 20401204 is 40210402.

20401204 is nontrivially palindromic in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354 + ... + 6529.

It is an arithmetic number, because the mean of its divisors is an integer number (2980152).

Almost surely, 2^20401204 is an apocalyptic number.

It is an amenable number.

20401204 is a deficient number, since it is larger than the sum of its proper divisors (15360620).

20401204 is a wasteful number, since it uses less digits than its factorization.

20401204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8534 (or 8532 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20401204 is about 4516.7691993282. The cubic root of 20401204 is about 273.2448169986.

Adding to 20401204 its reverse (40210402), we get a palindrome (60611606).

The spelling of 20401204 in words is "twenty million, four hundred one thousand, two hundred four".