20049406 has 16 divisors (see below), whose sum is σ = 32846688. Its totient is φ = 9122400.

The previous prime is 20049373. The next prime is 20049413. The reversal of 20049406 is 60494002.

It is a super-3 number, since 3×20049406³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3585 + ... + 7276.

It is an arithmetic number, because the mean of its divisors is an integer number (2052918).

Almost surely, 2^20049406 is an apocalyptic number.

20049406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20049406 is a deficient number, since it is larger than the sum of its proper divisors (12797282).

20049406 is a wasteful number, since it uses less digits than its factorization.

20049406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10947.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20049406 is about 4477.6563065961. The cubic root of 20049406 is about 271.6650920572.

The spelling of 20049406 in words is "twenty million, forty-nine thousand, four hundred six".