20712822 has 32 divisors (see below), whose sum is σ = 45824352. Its totient is φ = 6200064.

The previous prime is 20712767. The next prime is 20712823. The reversal of 20712822 is 22821702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20712792 and 20712801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20712823) 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 15 ways as a sum of consecutive naturals, for example, 703 + ... + 6474.

It is an arithmetic number, because the mean of its divisors is an integer number (1432011).

Almost surely, 2^20712822 is an apocalyptic number.

20712822 is an abundant number, since it is smaller than the sum of its proper divisors (25111530).

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

20712822 is a wasteful number, since it uses less digits than its factorization.

20712822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 20712822 is about 4551.1341443645. The cubic root of 20712822 is about 274.6290182188.

The spelling of 20712822 in words is "twenty million, seven hundred twelve thousand, eight hundred twenty-two".