20427488 has 12 divisors (see below), whose sum is σ = 40216680. Its totient is φ = 10213728.

The previous prime is 20427461. The next prime is 20427499. The reversal of 20427488 is 88472402.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 319148 + ... + 319211.

It is an arithmetic number, because the mean of its divisors is an integer number (3351390).

Almost surely, 2^20427488 is an apocalyptic number.

It is an amenable number.

20427488 is a deficient number, since it is larger than the sum of its proper divisors (19789192).

20427488 is an equidigital number, since it uses as much as digits as its factorization.

20427488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638369 (or 638361 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 20427488 is about 4519.6778646271. The cubic root of 20427488 is about 273.3621121129.

The spelling of 20427488 in words is "twenty million, four hundred twenty-seven thousand, four hundred eighty-eight".