20674042 has 8 divisors (see below), whose sum is σ = 32080500. Its totient is φ = 9980544.

The previous prime is 20674037. The next prime is 20674061. The reversal of 20674042 is 24047602.

It can be written as a sum of positive squares in 2 ways, for example, as 20620681 + 53361 = 4541^2 + 231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20673998 and 20674016.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 178167 + ... + 178282.

Almost surely, 2^20674042 is an apocalyptic number.

20674042 is a deficient number, since it is larger than the sum of its proper divisors (11406458).

20674042 is a wasteful number, since it uses less digits than its factorization.

20674042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356480.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20674042 is about 4546.8716718201. The cubic root of 20674042 is about 274.4575178976.

The spelling of 20674042 in words is "twenty million, six hundred seventy-four thousand, forty-two".