20801322 has 12 divisors (see below), whose sum is σ = 45069570. Its totient is φ = 6933768.

The previous prime is 20801317. The next prime is 20801383. The reversal of 20801322 is 22310802.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10439361 + 10361961 = 3231^2 + 3219^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1155629 = 20801322 / (2 + 0 + 8 + 0 + 1 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20801295 and 20801304.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 577797 + ... + 577832.

Almost surely, 2^20801322 is an apocalyptic number.

20801322 is an abundant number, since it is smaller than the sum of its proper divisors (24268248).

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

20801322 is a wasteful number, since it uses less digits than its factorization.

20801322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155637 (or 1155634 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20801322 is about 4560.8466319314. The cubic root of 20801322 is about 275.0195997050.

The spelling of 20801322 in words is "twenty million, eight hundred one thousand, three hundred twenty-two".