20907674 has 8 divisors (see below), whose sum is σ = 31399680. Its totient is φ = 10441116.

The previous prime is 20907673. The next prime is 20907697. The reversal of 20907674 is 47670902.

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

It is not an unprimeable number, because it can be changed into a prime (20907673) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4154 + ... + 7685.

It is an arithmetic number, because the mean of its divisors is an integer number (3924960).

Almost surely, 2^20907674 is an apocalyptic number.

20907674 is a deficient number, since it is larger than the sum of its proper divisors (10492006).

20907674 is a wasteful number, since it uses less digits than its factorization.

20907674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12724.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20907674 is about 4572.4910060054. The cubic root of 20907674 is about 275.4875055132.

The spelling of 20907674 in words is "twenty million, nine hundred seven thousand, six hundred seventy-four".