20872322 has 4 divisors (see below), whose sum is σ = 31308486. Its totient is φ = 10436160.

The previous prime is 20872307. The next prime is 20872337. The reversal of 20872322 is 22327802.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20872307) and next prime (20872337).

It can be written as a sum of positive squares in only one way, i.e., 14055001 + 6817321 = 3749^2 + 2611^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20872291 and 20872300.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5218079 + ... + 5218082.

Almost surely, 2^20872322 is an apocalyptic number.

20872322 is a deficient number, since it is larger than the sum of its proper divisors (10436164).

20872322 is a wasteful number, since it uses less digits than its factorization.

20872322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436163.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20872322 is about 4568.6236439435. The cubic root of 20872322 is about 275.3321474282.

The spelling of 20872322 in words is "twenty million, eight hundred seventy-two thousand, three hundred twenty-two".