20283406 has 16 divisors (see below), whose sum is σ = 35744688. Its totient is φ = 8510400.

The previous prime is 20283391. The next prime is 20283409. The reversal of 20283406 is 60438202.

It is a happy number.

It is a super-2 number, since 2×20283406² = 822833117921672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20283409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35175 + ... + 35746.

It is an arithmetic number, because the mean of its divisors is an integer number (2234043).

Almost surely, 2^20283406 is an apocalyptic number.

20283406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20283406 is a deficient number, since it is larger than the sum of its proper divisors (15461282).

20283406 is a wasteful number, since it uses less digits than its factorization.

20283406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70947.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20283406 is about 4503.7102482287. The cubic root of 20283406 is about 272.7178898657.

The spelling of 20283406 in words is "twenty million, two hundred eighty-three thousand, four hundred six".