20040620 has 24 divisors (see below), whose sum is σ = 44561664. Its totient is φ = 7544576.

The previous prime is 20040619. The next prime is 20040667. The reversal of 20040620 is 2604002.

It is a junction number, because it is equal to n+sod(n) for n = 20040595 and 20040604.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29132 + ... + 29811.

It is an arithmetic number, because the mean of its divisors is an integer number (1856736).

Almost surely, 2^20040620 is an apocalyptic number.

20040620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20040620 is an abundant number, since it is smaller than the sum of its proper divisors (24521044).

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

20040620 is a wasteful number, since it uses less digits than its factorization.

20040620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58969 (or 58967 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20040620 is about 4476.6751054773. The cubic root of 20040620 is about 271.6254034627.

Adding to 20040620 its reverse (2604002), we get a palindrome (22644622).

The spelling of 20040620 in words is "twenty million, forty thousand, six hundred twenty".