20624543 has 8 divisors (see below), whose sum is σ = 21007920. Its totient is φ = 20243520.

The previous prime is 20624533. The next prime is 20624561. The reversal of 20624543 is 34542602.

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

It is a cyclic number.

It is not a de Polignac number, because 20624543 - 2⁶ = 20624479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35963 + ... + 36531.

It is an arithmetic number, because the mean of its divisors is an integer number (2625990).

Almost surely, 2^20624543 is an apocalyptic number.

20624543 is a deficient number, since it is larger than the sum of its proper divisors (383377).

20624543 is an equidigital number, since it uses as much as digits as its factorization.

20624543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177.

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

The square root of 20624543 is about 4541.4252168235. The cubic root of 20624543 is about 274.2383021064.

The spelling of 20624543 in words is "twenty million, six hundred twenty-four thousand, five hundred forty-three".