20040336 has 30 divisors (see below), whose sum is σ = 56085510. Its totient is φ = 6680064.

The previous prime is 20040329. The next prime is 20040359. The reversal of 20040336 is 63304002.

It can be written as a sum of positive squares in only one way, i.e., 16353936 + 3686400 = 4044^2 + 1920^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69441 + ... + 69728.

It is an arithmetic number, because the mean of its divisors is an integer number (1869517).

Almost surely, 2^20040336 is an apocalyptic number.

It is an amenable number.

20040336 is an abundant number, since it is smaller than the sum of its proper divisors (36045174).

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

20040336 is a wasteful number, since it uses less digits than its factorization.

20040336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139183 (or 139174 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20040336 is about 4476.6433853949. The cubic root of 20040336 is about 271.6241203690.

Adding to 20040336 its reverse (63304002), we get a palindrome (83344338).

The spelling of 20040336 in words is "twenty million, forty thousand, three hundred thirty-six".