20383828 has 6 divisors (see below), whose sum is σ = 35671706. Its totient is φ = 10191912.

The previous prime is 20383801. The next prime is 20383841. The reversal of 20383828 is 82838302.

It can be written as a sum of positive squares in only one way, i.e., 18079504 + 2304324 = 4252^2 + 1518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20383793 and 20383802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2547975 + ... + 2547982.

Almost surely, 2^20383828 is an apocalyptic number.

It is an amenable number.

20383828 is a deficient number, since it is larger than the sum of its proper divisors (15287878).

20383828 is a wasteful number, since it uses less digits than its factorization.

20383828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095961 (or 5095959 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 20383828 is about 4514.8452908156. The cubic root of 20383828 is about 273.1672194455.

The spelling of 20383828 in words is "twenty million, three hundred eighty-three thousand, eight hundred twenty-eight".