20478941 has 16 divisors (see below), whose sum is σ = 25436160. Its totient is φ = 16089840.

The previous prime is 20478937. The next prime is 20478949. The reversal of 20478941 is 14987402.

It is a cyclic number.

It is not a de Polignac number, because 20478941 - 2² = 20478937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20478949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1640 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (1589760).

Almost surely, 2^20478941 is an apocalyptic number.

It is an amenable number.

20478941 is a deficient number, since it is larger than the sum of its proper divisors (4957219).

20478941 is a wasteful number, since it uses less digits than its factorization.

20478941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 20478941 is about 4525.3663940061. The cubic root of 20478941 is about 273.5914355939.

The spelling of 20478941 in words is "twenty million, four hundred seventy-eight thousand, nine hundred forty-one".