20193105 has 16 divisors (see below), whose sum is σ = 34009920. Its totient is φ = 10202688.

The previous prime is 20193097. The next prime is 20193113. The reversal of 20193105 is 50139102.

It is an interprime number because it is at equal distance from previous prime (20193097) and next prime (20193113).

It is not a de Polignac number, because 20193105 - 2³ = 20193097 is a prime.

It is a super-2 number, since 2×20193105² = 815522979082050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35142 + ... + 35711.

It is an arithmetic number, because the mean of its divisors is an integer number (2125620).

Almost surely, 2^20193105 is an apocalyptic number.

It is an amenable number.

20193105 is a deficient number, since it is larger than the sum of its proper divisors (13816815).

20193105 is a wasteful number, since it uses less digits than its factorization.

20193105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70880.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 20193105 is about 4493.6738866989. The cubic root of 20193105 is about 272.3125776850.

The spelling of 20193105 in words is "twenty million, one hundred ninety-three thousand, one hundred five".