20283906 has 16 divisors (see below), whose sum is σ = 42703200. Its totient is φ = 6405408.

The previous prime is 20283899. The next prime is 20283911. The reversal of 20283906 is 60938202.

It is a super-2 number, since 2×20283906² = 822873685233672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88851 + ... + 89078.

It is an arithmetic number, because the mean of its divisors is an integer number (2668950).

Almost surely, 2^20283906 is an apocalyptic number.

20283906 is an abundant number, since it is smaller than the sum of its proper divisors (22419294).

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

20283906 is a wasteful number, since it uses less digits than its factorization.

20283906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177953.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20283906 is about 4503.7657576743. The cubic root of 20283906 is about 272.7201307423.

The spelling of 20283906 in words is "twenty million, two hundred eighty-three thousand, nine hundred six".