20213482 has 4 divisors (see below), whose sum is σ = 30320226. Its totient is φ = 10106740.

The previous prime is 20213471. The next prime is 20213497. The reversal of 20213482 is 28431202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28431202 = 2 ⋅14215601.

It can be written as a sum of positive squares in only one way, i.e., 17048641 + 3164841 = 4129^2 + 1779^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053369 + ... + 5053372.

Almost surely, 2^20213482 is an apocalyptic number.

20213482 is a deficient number, since it is larger than the sum of its proper divisors (10106744).

20213482 is a wasteful number, since it uses less digits than its factorization.

20213482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106743.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20213482 is about 4495.9406134868. The cubic root of 20213482 is about 272.4041443849.

Adding to 20213482 its reverse (28431202), we get a palindrome (48644684).

The spelling of 20213482 in words is "twenty million, two hundred thirteen thousand, four hundred eighty-two".