20236246 has 4 divisors (see below), whose sum is σ = 30354372. Its totient is φ = 10118122.

The previous prime is 20236199. The next prime is 20236253. The reversal of 20236246 is 64263202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64263202 = 2 ⋅32131601.

It is a self number, because there is not a number n which added to its sum of digits gives 20236246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5059060 + ... + 5059063.

It is an arithmetic number, because the mean of its divisors is an integer number (7588593).

Almost surely, 2^20236246 is an apocalyptic number.

20236246 is a deficient number, since it is larger than the sum of its proper divisors (10118126).

20236246 is a wasteful number, since it uses less digits than its factorization.

20236246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118125.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 20236246 is about 4498.4715181937. The cubic root of 20236246 is about 272.5063646355.

Adding to 20236246 its reverse (64263202), we get a palindrome (84499448).

The spelling of 20236246 in words is "twenty million, two hundred thirty-six thousand, two hundred forty-six".