20822061 has 32 divisors (see below), whose sum is σ = 31610880. Its totient is φ = 12095424.

The previous prime is 20822051. The next prime is 20822063. The reversal of 20822061 is 16022802.

It is not a de Polignac number, because 20822061 - 2¹⁰ = 20821037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20822063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124600 + ... + 124766.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^20822061 is an apocalyptic number.

It is an amenable number.

20822061 is a deficient number, since it is larger than the sum of its proper divisors (10788819).

20822061 is a wasteful number, since it uses less digits than its factorization.

20822061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20822061 is about 4563.1196565508. The cubic root of 20822061 is about 275.1109678884.

Adding to 20822061 its reverse (16022802), we get a palindrome (36844863).

The spelling of 20822061 in words is "twenty million, eight hundred twenty-two thousand, sixty-one".