20427936 has 24 divisors (see below), whose sum is σ = 53623584. Its totient is φ = 6809280.

The previous prime is 20427923. The next prime is 20427943. The reversal of 20427936 is 63972402.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 20427897 and 20427906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106300 + ... + 106491.

It is an arithmetic number, because the mean of its divisors is an integer number (2234316).

Almost surely, 2^20427936 is an apocalyptic number.

It is an amenable number.

20427936 is an abundant number, since it is smaller than the sum of its proper divisors (33195648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20427936 is a wasteful number, since it uses less digits than its factorization.

20427936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212804 (or 212796 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 20427936 is about 4519.7274254096. The cubic root of 20427936 is about 273.3641104877.

The spelling of 20427936 in words is "twenty million, four hundred twenty-seven thousand, nine hundred thirty-six".