20002782 has 16 divisors (see below), whose sum is σ = 42111360. Its totient is φ = 6316632.

The previous prime is 20002771. The next prime is 20002799. The reversal of 20002782 is 28720002.

It is a super-2 number, since 2×20002782² = 800222575479048, which contains 22 as substring.

It is a congruent number.

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, 87618 + ... + 87845.

It is an arithmetic number, because the mean of its divisors is an integer number (2631960).

Almost surely, 2^20002782 is an apocalyptic number.

20002782 is an abundant number, since it is smaller than the sum of its proper divisors (22108578).

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

20002782 is a wasteful number, since it uses less digits than its factorization.

20002782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175487.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20002782 is about 4472.4469812397. The cubic root of 20002782 is about 271.4543469257.

Adding to 20002782 its reverse (28720002), we get a palindrome (48722784).

The spelling of 20002782 in words is "twenty million, two thousand, seven hundred eighty-two".