20208494 has 8 divisors (see below), whose sum is σ = 30551808. Its totient is φ = 10024560.

The previous prime is 20208443. The next prime is 20208499. The reversal of 20208494 is 49480202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20208499) 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, 39527 + ... + 40034.

It is an arithmetic number, because the mean of its divisors is an integer number (3818976).

Almost surely, 2^20208494 is an apocalyptic number.

20208494 is a deficient number, since it is larger than the sum of its proper divisors (10343314).

20208494 is a wasteful number, since it uses less digits than its factorization.

20208494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79690.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20208494 is about 4495.3858566312. The cubic root of 20208494 is about 272.3817358483.

Adding to 20208494 its reverse (49480202), we get a palindrome (69688696).

It can be divided in two parts, 20208 and 494, that added together give a palindrome (20702).

The spelling of 20208494 in words is "twenty million, two hundred eight thousand, four hundred ninety-four".