20040396 has 24 divisors (see below), whose sum is σ = 46937520. Its totient is φ = 6654912.

The previous prime is 20040373. The next prime is 20040403. The reversal of 20040396 is 69304002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (1955730).

Almost surely, 2^20040396 is an apocalyptic number.

It is an amenable number.

20040396 is an abundant number, since it is smaller than the sum of its proper divisors (26897124).

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

20040396 is a wasteful number, since it uses less digits than its factorization.

20040396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313 (or 6311 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 20040396 is about 4476.6500868395. The cubic root of 20040396 is about 271.6243914461.

Adding to 20040396 its reverse (69304002), we get a palindrome (89344398).

The spelling of 20040396 in words is "twenty million, forty thousand, three hundred ninety-six".