20283968 has 14 divisors (see below), whose sum is σ = 40251126. Its totient is φ = 10141952.

The previous prime is 20283959. The next prime is 20283973. The reversal of 20283968 is 86938202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11235904 + 9048064 = 3352^2 + 3008^2 .

It is a super-2 number, since 2×20283968² = 822878715650048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158405 + ... + 158532.

Almost surely, 2^20283968 is an apocalyptic number.

It is an amenable number.

20283968 is a deficient number, since it is larger than the sum of its proper divisors (19967158).

20283968 is an equidigital number, since it uses as much as digits as its factorization.

20283968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316949 (or 316939 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20283968 is about 4503.7726407979. The cubic root of 20283968 is about 272.7204086084.

The spelling of 20283968 in words is "twenty million, two hundred eighty-three thousand, nine hundred sixty-eight".