20604427 has 8 divisors (see below), whose sum is σ = 21222432. Its totient is φ = 19992000.

The previous prime is 20604407. The next prime is 20604431. The reversal of 20604427 is 72440602.

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

It is a cyclic number.

It is not a de Polignac number, because 20604427 - 2⁷ = 20604299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20604407) 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, 6802 + ... + 9352.

It is an arithmetic number, because the mean of its divisors is an integer number (2652804).

Almost surely, 2^20604427 is an apocalyptic number.

20604427 is a deficient number, since it is larger than the sum of its proper divisors (618005).

20604427 is a wasteful number, since it uses less digits than its factorization.

20604427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789.

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

The square root of 20604427 is about 4539.2099532848. The cubic root of 20604427 is about 274.1491143173.

The spelling of 20604427 in words is "twenty million, six hundred four thousand, four hundred twenty-seven".