20040700 has 18 divisors (see below), whose sum is σ = 43488536. Its totient is φ = 8016240.

The previous prime is 20040689. The next prime is 20040701. The reversal of 20040700 is 704002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100104 + ... + 100303.

Almost surely, 2^20040700 is an apocalyptic number.

20040700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20040700 is an abundant number, since it is smaller than the sum of its proper divisors (23447836).

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

20040700 is a wasteful number, since it uses less digits than its factorization.

20040700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200421 (or 200414 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 20040700 is about 4476.6840406712. The cubic root of 20040700 is about 271.6257648953.

Adding to 20040700 its reverse (704002), we get a palindrome (20744702).

The spelling of 20040700 in words is "twenty million, forty thousand, seven hundred".