20219193 has 16 divisors (see below), whose sum is σ = 30404160. Its totient is φ = 13277088.

The previous prime is 20219189. The next prime is 20219197. The reversal of 20219193 is 39191202.

It is an interprime number because it is at equal distance from previous prime (20219189) and next prime (20219197).

It is not a de Polignac number, because 20219193 - 2² = 20219189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20219197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3780 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (1900260).

Almost surely, 2^20219193 is an apocalyptic number.

It is an amenable number.

20219193 is a deficient number, since it is larger than the sum of its proper divisors (10184967).

20219193 is a wasteful number, since it uses less digits than its factorization.

20219193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11253 (or 11247 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 20219193 is about 4496.5756971278. The cubic root of 20219193 is about 272.4297964650.

The spelling of 20219193 in words is "twenty million, two hundred nineteen thousand, one hundred ninety-three".