20674738 has 16 divisors (see below), whose sum is σ = 36665280. Its totient is φ = 8554896.

The previous prime is 20674733. The next prime is 20674751. The reversal of 20674738 is 83747602.

It is a junction number, because it is equal to n+sod(n) for n = 20674697 and 20674706.

It is not an unprimeable number, because it can be changed into a prime (20674733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25056 + ... + 25867.

It is an arithmetic number, because the mean of its divisors is an integer number (2291580).

Almost surely, 2^20674738 is an apocalyptic number.

20674738 is a deficient number, since it is larger than the sum of its proper divisors (15990542).

20674738 is a wasteful number, since it uses less digits than its factorization.

20674738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50961.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 20674738 is about 4546.9482073144. The cubic root of 20674738 is about 274.4605977708.

It can be divided in two parts, 20674 and 738, that added together give a palindrome (21412).

The spelling of 20674738 in words is "twenty million, six hundred seventy-four thousand, seven hundred thirty-eight".