20002772 has 12 divisors (see below), whose sum is σ = 35038080. Its totient is φ = 9991896.

The previous prime is 20002771. The next prime is 20002799. The reversal of 20002772 is 27720002.

It is a super-2 number, since 2×20002772² = 800221775367968, which contains 22 as substring.

20002772 is a modest number, since divided by 2772 gives 20 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4733 + ... + 7899.

It is an arithmetic number, because the mean of its divisors is an integer number (2919840).

Almost surely, 2^20002772 is an apocalyptic number.

It is an amenable number.

20002772 is a deficient number, since it is larger than the sum of its proper divisors (15035308).

20002772 is a wasteful number, since it uses less digits than its factorization.

20002772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4750 (or 4748 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 20002772 is about 4472.4458632833. The cubic root of 20002772 is about 271.4543016895.

Adding to 20002772 its reverse (27720002), we get a palindrome (47722774).

The spelling of 20002772 in words is "twenty million, two thousand, seven hundred seventy-two".