20093811 has 8 divisors (see below), whose sum is σ = 28201920. Its totient is φ = 12690792.

The previous prime is 20093791. The next prime is 20093867. The reversal of 20093811 is 11839002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20093811 - 2⁶ = 20093747 is a prime.

It is a super-2 number, since 2×20093811² = 807522481007442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20093891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176205 + ... + 176318.

It is an arithmetic number, because the mean of its divisors is an integer number (3525240).

Almost surely, 2^20093811 is an apocalyptic number.

20093811 is a deficient number, since it is larger than the sum of its proper divisors (8108109).

20093811 is a wasteful number, since it uses less digits than its factorization.

20093811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352545.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 20093811 is about 4482.6120733340. The cubic root of 20093811 is about 271.8655035394.

The spelling of 20093811 in words is "twenty million, ninety-three thousand, eight hundred eleven".