20051828 has 6 divisors (see below), whose sum is σ = 35090706. Its totient is φ = 10025912.

The previous prime is 20051819. The next prime is 20051831. The reversal of 20051828 is 82815002.

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 88804 = 4468^2 + 298^2 .

It is a super-2 number, since 2×20051828² = 804151612283168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20051797 and 20051806.

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, 2506475 + ... + 2506482.

It is an arithmetic number, because the mean of its divisors is an integer number (5848451).

Almost surely, 2^20051828 is an apocalyptic number.

It is an amenable number.

20051828 is a deficient number, since it is larger than the sum of its proper divisors (15038878).

20051828 is a wasteful number, since it uses less digits than its factorization.

20051828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012961 (or 5012959 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 20051828 is about 4477.9267524157. The cubic root of 20051828 is about 271.6760308079.

The spelling of 20051828 in words is "twenty million, fifty-one thousand, eight hundred twenty-eight".