20116438 has 4 divisors (see below), whose sum is σ = 30174660. Its totient is φ = 10058218.

The previous prime is 20116429. The next prime is 20116441. The reversal of 20116438 is 83461102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83461102 = 2 ⋅41730551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5029108 + ... + 5029111.

It is an arithmetic number, because the mean of its divisors is an integer number (7543665).

Almost surely, 2^20116438 is an apocalyptic number.

20116438 is a deficient number, since it is larger than the sum of its proper divisors (10058222).

20116438 is a wasteful number, since it uses less digits than its factorization.

20116438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10058221.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20116438 is about 4485.1352265010. The cubic root of 20116438 is about 271.9675116185.

The spelling of 20116438 in words is "twenty million, one hundred sixteen thousand, four hundred thirty-eight".