20673722 has 4 divisors (see below), whose sum is σ = 31010586. Its totient is φ = 10336860.

The previous prime is 20673701. The next prime is 20673769. The reversal of 20673722 is 22737602.

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

It can be written as a sum of positive squares in only one way, i.e., 11498881 + 9174841 = 3391^2 + 3029^2 .

It is a super-3 number, since 3×20673722³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5168429 + ... + 5168432.

Almost surely, 2^20673722 is an apocalyptic number.

20673722 is a deficient number, since it is larger than the sum of its proper divisors (10336864).

20673722 is a wasteful number, since it uses less digits than its factorization.

20673722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10336863.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20673722 is about 4546.8364826547. The cubic root of 20673722 is about 274.4561018407.

The spelling of 20673722 in words is "twenty million, six hundred seventy-three thousand, seven hundred twenty-two".