20604543 has 8 divisors (see below), whose sum is σ = 27820800. Its totient is φ = 13562328.

The previous prime is 20604541. The next prime is 20604547. The reversal of 20604543 is 34540602.

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

It is not a de Polignac number, because 20604543 - 2¹ = 20604541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604541) 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, 43233 + ... + 43706.

It is an arithmetic number, because the mean of its divisors is an integer number (3477600).

Almost surely, 2^20604543 is an apocalyptic number.

20604543 is a deficient number, since it is larger than the sum of its proper divisors (7216257).

20604543 is an equidigital number, since it uses as much as digits as its factorization.

20604543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87021.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20604543 is about 4539.2227308208. Note that the first 3 decimals coincide. The cubic root of 20604543 is about 274.1496287898.

The spelling of 20604543 in words is "twenty million, six hundred four thousand, five hundred forty-three".