20284193 has 2 divisors, whose sum is σ = 20284194. Its totient is φ = 20284192.

The previous prime is 20284181. The next prime is 20284211. The reversal of 20284193 is 39148202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10349089 + 9935104 = 3217^2 + 3152^2 .

It is a cyclic number.

It is not a de Polignac number, because 20284193 - 2⁶ = 20284129 is a prime.

It is a super-2 number, since 2×20284193² = 822896971322498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20284793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10142096 + 10142097.

It is an arithmetic number, because the mean of its divisors is an integer number (10142097).

Almost surely, 2^20284193 is an apocalyptic number.

It is an amenable number.

20284193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20284193 is an equidigital number, since it uses as much as digits as its factorization.

20284193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20284193 is about 4503.7976197871. The cubic root of 20284193 is about 272.7214169888.

The spelling of 20284193 in words is "twenty million, two hundred eighty-four thousand, one hundred ninety-three".