20893011 has 16 divisors (see below), whose sum is σ = 28348320. Its totient is φ = 13685760.

The previous prime is 20893003. The next prime is 20893043. The reversal of 20893011 is 11039802.

It is not a de Polignac number, because 20893011 - 2³ = 20893003 is a prime.

It is a super-2 number, since 2×20893011² = 873035817292242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20893001) 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, 59011 + ... + 59363.

It is an arithmetic number, because the mean of its divisors is an integer number (1771770).

Almost surely, 2^20893011 is an apocalyptic number.

20893011 is a deficient number, since it is larger than the sum of its proper divisors (7455309).

20893011 is a wasteful number, since it uses less digits than its factorization.

20893011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

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

The square root of 20893011 is about 4570.8873317989. The cubic root of 20893011 is about 275.4230886873.

The spelling of 20893011 in words is "twenty million, eight hundred ninety-three thousand, eleven".