20472586 has 8 divisors (see below), whose sum is σ = 31699584. Its totient is φ = 9906060.

The previous prime is 20472583. The next prime is 20472611. The reversal of 20472586 is 68527402.

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

It is not an unprimeable number, because it can be changed into a prime (20472583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165040 + ... + 165163.

It is an arithmetic number, because the mean of its divisors is an integer number (3962448).

Almost surely, 2^20472586 is an apocalyptic number.

20472586 is a deficient number, since it is larger than the sum of its proper divisors (11226998).

20472586 is a wasteful number, since it uses less digits than its factorization.

20472586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330236.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 20472586 is about 4524.6641864342. The cubic root of 20472586 is about 273.5631324792.

Adding to 20472586 its reverse (68527402), we get a palindrome (88999988).

The spelling of 20472586 in words is "twenty million, four hundred seventy-two thousand, five hundred eighty-six".