20840282 has 8 divisors (see below), whose sum is σ = 31292352. Its totient is φ = 10409500.

The previous prime is 20840269. The next prime is 20840293. The reversal of 20840282 is 28204802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2594 + ... + 6957.

It is an arithmetic number, because the mean of its divisors is an integer number (3911544).

Almost surely, 2^20840282 is an apocalyptic number.

20840282 is a deficient number, since it is larger than the sum of its proper divisors (10452070).

20840282 is a wasteful number, since it uses less digits than its factorization.

20840282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 20840282 is about 4565.1157707116. The cubic root of 20840282 is about 275.1911926631.

The spelling of 20840282 in words is "twenty million, eight hundred forty thousand, two hundred eighty-two".