20822634 has 48 divisors (see below), whose sum is σ = 52453440. Its totient is φ = 5846400.

The previous prime is 20822591. The next prime is 20822647. The reversal of 20822634 is 43622802.

20822634 is a `hidden beast` number, since 2 + 0 + 8 + 22 + 634 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20822598 and 20822607.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6034 + ... + 8834.

It is an arithmetic number, because the mean of its divisors is an integer number (1092780).

Almost surely, 2^20822634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20822634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26226720).

20822634 is an abundant number, since it is smaller than the sum of its proper divisors (31630806).

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

20822634 is a wasteful number, since it uses less digits than its factorization.

20822634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875 (or 2872 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20822634 is about 4563.1824421121. The cubic root of 20822634 is about 275.1134914481.

The spelling of 20822634 in words is "twenty million, eight hundred twenty-two thousand, six hundred thirty-four".