20243546 has 8 divisors (see below), whose sum is σ = 30604800. Its totient is φ = 10041948.

The previous prime is 20243533. The next prime is 20243563. The reversal of 20243546 is 64534202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39596 + ... + 40103.

It is an arithmetic number, because the mean of its divisors is an integer number (3825600).

Almost surely, 2^20243546 is an apocalyptic number.

20243546 is a deficient number, since it is larger than the sum of its proper divisors (10361254).

20243546 is a wasteful number, since it uses less digits than its factorization.

20243546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79828.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 20243546 is about 4499.2828317411. The cubic root of 20243546 is about 272.5391285731.

Adding to 20243546 its reverse (64534202), we get a palindrome (84777748).

The spelling of 20243546 in words is "twenty million, two hundred forty-three thousand, five hundred forty-six".