20774133 has 6 divisors (see below), whose sum is σ = 30007094. Its totient is φ = 13849416.

The previous prime is 20774101. The next prime is 20774147. The reversal of 20774133 is 33147702.

It can be written as a sum of positive squares in only one way, i.e., 11881809 + 8892324 = 3447^2 + 2982^2 .

It is not a de Polignac number, because 20774133 - 2⁵ = 20774101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20774097 and 20774106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20774183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1154110 + ... + 1154127.

Almost surely, 2^20774133 is an apocalyptic number.

It is an amenable number.

20774133 is a deficient number, since it is larger than the sum of its proper divisors (9232961).

20774133 is a wasteful number, since it uses less digits than its factorization.

20774133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308243 (or 2308240 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 20774133 is about 4557.8649607025. The cubic root of 20774133 is about 274.8997232188.

The spelling of 20774133 in words is "twenty million, seven hundred seventy-four thousand, one hundred thirty-three".