20335406 has 16 divisors (see below), whose sum is σ = 37542624. Its totient is φ = 8044704.

The previous prime is 20335397. The next prime is 20335421. The reversal of 20335406 is 60453302.

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 7 ways as a sum of consecutive naturals, for example, 55685 + ... + 56048.

It is an arithmetic number, because the mean of its divisors is an integer number (2346414).

Almost surely, 2^20335406 is an apocalyptic number.

20335406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20335406 is a deficient number, since it is larger than the sum of its proper divisors (17207218).

20335406 is a wasteful number, since it uses less digits than its factorization.

20335406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111755.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20335406 is about 4509.4795708596. The cubic root of 20335406 is about 272.9507440643.

Adding to 20335406 its reverse (60453302), we get a palindrome (80788708).

The spelling of 20335406 in words is "twenty million, three hundred thirty-five thousand, four hundred six".