20038811 has 8 divisors (see below), whose sum is σ = 21654864. Its totient is φ = 18433440.

The previous prime is 20038789. The next prime is 20038841. The reversal of 20038811 is 11883002.

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

It is a cyclic number.

It is not a de Polignac number, because 20038811 - 2⁶ = 20038747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20038841) 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, 1481 + ... + 6501.

It is an arithmetic number, because the mean of its divisors is an integer number (2706858).

Almost surely, 2^20038811 is an apocalyptic number.

20038811 is a deficient number, since it is larger than the sum of its proper divisors (1616053).

20038811 is a wasteful number, since it uses less digits than its factorization.

20038811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 20038811 is about 4476.4730536439. The cubic root of 20038811 is about 271.6172303100.

The spelling of 20038811 in words is "twenty million, thirty-eight thousand, eight hundred eleven".