20258193 has 16 divisors (see below), whose sum is σ = 28302336. Its totient is φ = 12864720.

The previous prime is 20258191. The next prime is 20258201. The reversal of 20258193 is 39185202.

It is a happy number.

It is not a de Polignac number, because 20258193 - 2¹ = 20258191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20258193.

It is not an unprimeable number, because it can be changed into a prime (20258191) 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, 22396 + ... + 23282.

It is an arithmetic number, because the mean of its divisors is an integer number (1768896).

Almost surely, 2^20258193 is an apocalyptic number.

20258193 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20258193 is a deficient number, since it is larger than the sum of its proper divisors (8044143).

20258193 is a wasteful number, since it uses less digits than its factorization.

20258193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20258193 is about 4500.9102412734. The cubic root of 20258193 is about 272.6048436450.

The spelling of 20258193 in words is "twenty million, two hundred fifty-eight thousand, one hundred ninety-three".