20414440 has 16 divisors (see below), whose sum is σ = 45932580. Its totient is φ = 8165760.

The previous prime is 20414437. The next prime is 20414441. The reversal of 20414440 is 4441402.

It can be written as a sum of positive squares in 2 ways, for example, as 20412324 + 2116 = 4518^2 + 46^2 .

It is not an unprimeable number, because it can be changed into a prime (20414441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255141 + ... + 255220.

Almost surely, 2^20414440 is an apocalyptic number.

20414440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20414440 is an abundant number, since it is smaller than the sum of its proper divisors (25518140).

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

20414440 is a wasteful number, since it uses less digits than its factorization.

20414440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510372 (or 510368 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 20414440 is about 4518.2341683450. The cubic root of 20414440 is about 273.3038966250.

Adding to 20414440 its reverse (4441402), we get a palindrome (24855842).

The spelling of 20414440 in words is "twenty million, four hundred fourteen thousand, four hundred forty".