20213193 has 64 divisors (see below), whose sum is σ = 37158912. Its totient is φ = 9434880.

The previous prime is 20213183. The next prime is 20213197. The reversal of 20213193 is 39131202.

It is a happy number.

It is not a de Polignac number, because 20213193 - 2⁸ = 20212937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20213197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159096 + ... + 159222.

It is an arithmetic number, because the mean of its divisors is an integer number (580608).

Almost surely, 2^20213193 is an apocalyptic number.

It is an amenable number.

20213193 is a deficient number, since it is larger than the sum of its proper divisors (16945719).

20213193 is a wasteful number, since it uses less digits than its factorization.

20213193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 20213193 is about 4495.9084732677. The cubic root of 20213193 is about 272.4028461561.

Adding to 20213193 its reverse (39131202), we get a palindrome (59344395).

The spelling of 20213193 in words is "twenty million, two hundred thirteen thousand, one hundred ninety-three".