20538896 has 20 divisors (see below), whose sum is σ = 45479232. Its totient is φ = 8802336.

The previous prime is 20538893. The next prime is 20538899. The reversal of 20538896 is 69883502.

It is an interprime number because it is at equal distance from previous prime (20538893) and next prime (20538899).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20538893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91580 + ... + 91803.

Almost surely, 2^20538896 is an apocalyptic number.

It is an amenable number.

20538896 is an abundant number, since it is smaller than the sum of its proper divisors (24940336).

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

20538896 is a wasteful number, since it uses less digits than its factorization.

20538896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183398 (or 183392 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 20538896 is about 4531.9858781775. The cubic root of 20538896 is about 273.8581680219.

The spelling of 20538896 in words is "twenty million, five hundred thirty-eight thousand, eight hundred ninety-six".