20140406 has 24 divisors (see below), whose sum is σ = 35693784. Its totient is φ = 8448960.

The previous prime is 20140363. The next prime is 20140411. The reversal of 20140406 is 60404102.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1010 + ... + 6426.

It is an arithmetic number, because the mean of its divisors is an integer number (1487241).

Almost surely, 2^20140406 is an apocalyptic number.

20140406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20140406 is a deficient number, since it is larger than the sum of its proper divisors (15553378).

20140406 is a wasteful number, since it uses less digits than its factorization.

20140406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456 (or 5443 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20140406 is about 4487.8063683720. The cubic root of 20140406 is about 272.0754818627.

Adding to 20140406 its reverse (60404102), we get a palindrome (80544508).

The spelling of 20140406 in words is "twenty million, one hundred forty thousand, four hundred six".